20221002 evening

This commit is contained in:
weiye.wang 2022-10-02 21:28:06 +08:00
parent c92ef35810
commit 908eebc855
6 changed files with 605 additions and 169 deletions

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@ -2,7 +2,7 @@
"cells": [ "cells": [
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 4, "execution_count": 10,
"metadata": {}, "metadata": {},
"outputs": [ "outputs": [
{ {
@ -11,7 +11,7 @@
"0" "0"
] ]
}, },
"execution_count": 4, "execution_count": 10,
"metadata": {}, "metadata": {},
"output_type": "execute_result" "output_type": "execute_result"
} }
@ -21,14 +21,14 @@
"\n", "\n",
"\"\"\"---设置关键字, 同一field下不同选项为or关系, 同一字典中不同字段间为and关系, 不同字典间为or关系, _not表示列表中的关键字都不含, 同一字典中的数字用来供应同一字段不同的条件之间的and---\"\"\"\n", "\"\"\"---设置关键字, 同一field下不同选项为or关系, 同一字典中不同字段间为and关系, 不同字典间为or关系, _not表示列表中的关键字都不含, 同一字典中的数字用来供应同一字段不同的条件之间的and---\"\"\"\n",
"keywords_dict_table = [\n", "keywords_dict_table = [\n",
" {\"tags\":[\"第六单元\"],\"content\":[\"perp\"]}\n", " {\"tags\":[\"第三单元\"]}\n",
"]\n", "]\n",
"\"\"\"---关键字设置完毕---\"\"\"\n", "\"\"\"---关键字设置完毕---\"\"\"\n",
"# 示例: keywords_dict_table = [\n", "# 示例: keywords_dict_table = [\n",
"# {\"tags\": [\"第三单元\"], \"content1\": [r\"[\\d]\\alpha\",\"2x\"], \"content2\": [\"sin\"], \"content3\": [\"cos\"],\"content4\": [\"cot\"], \"content5\": [\"tan\"]},\n", "# {\"tags\": [\"第三单元\"], \"content1\": [r\"[\\d]\\alpha\",\"2x\"], \"content2\": [\"sin\"], \"content3\": [\"cos\"],\"content4\": [\"cot\"], \"content5\": [\"tan\"]},\n",
"# ]\n", "# ]\n",
"\"\"\"---设置输出文件名---\"\"\"\n", "\"\"\"---设置输出文件名---\"\"\"\n",
"filename = \"临时文件/K0602.txt\"\n", "filename = \"临时文件/题号筛选.txt\"\n",
"\"\"\"---文件名设置完毕---\"\"\"\n", "\"\"\"---文件名设置完毕---\"\"\"\n",
"\n", "\n",
"\n", "\n",
@ -85,7 +85,7 @@
], ],
"metadata": { "metadata": {
"kernelspec": { "kernelspec": {
"display_name": "Python 3.9.7 ('base')", "display_name": "Python 3.8.8 ('base')",
"language": "python", "language": "python",
"name": "python3" "name": "python3"
}, },
@ -99,12 +99,12 @@
"name": "python", "name": "python",
"nbconvert_exporter": "python", "nbconvert_exporter": "python",
"pygments_lexer": "ipython3", "pygments_lexer": "ipython3",
"version": "3.9.7" "version": "3.8.8"
}, },
"orig_nbformat": 4, "orig_nbformat": 4,
"vscode": { "vscode": {
"interpreter": { "interpreter": {
"hash": "e4cce46d6be9934fbd27f9ca0432556941ea5bdf741d4f4d64c6cd7f8dfa8fba" "hash": "d311ffef239beb3b8f3764271728f3972d7b090c974f8e972fcdeedf230299ac"
} }
} }
}, },

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@ -2,133 +2,46 @@
"cells": [ "cells": [
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 3, "execution_count": 7,
"metadata": {}, "metadata": {},
"outputs": [ "outputs": [
{ {
"name": "stdout", "name": "stdout",
"output_type": "stream", "output_type": "stream",
"text": [ "text": [
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"题号: 006264 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.868\n", "题号: 001596 , 字段: objs 中已添加数据: K0601003B\n",
"题号: 003096 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.842\n", "题号: 001596 , 字段: objs 中已添加数据: K0601005B\n",
"题号: 001472 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.737\n", "题号: 001596 , 字段: objs 中已添加数据: K0601006B\n",
"题号: 006604 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.842\n", "题号: 000179 , 字段: objs 中已添加数据: K0601004B\n",
"题号: 030027 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.579\n", "题号: 030087 , 字段: objs 中已添加数据: K0601005B\n",
"题号: 030028 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.342\n", "题号: 001595 , 字段: objs 中已添加数据: K0602001B\n",
"题号: 006305 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.763\n", "题号: 001595 , 字段: objs 中已添加数据: K0602002B\n",
"题号: 006460 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.553\n", "题号: 009666 , 字段: objs 中已添加数据: K0602003B\n",
"题号: 006463 , 字段: usages 中已添加数据: 20220929\t2023届高三10班\t0.421\n", "题号: 030089 , 字段: objs 中已添加数据: K0603001B\n",
"题号: 003115 , 字段: usages 中已添加数据: 20220929\t2023届高三11班\t0.696\n", "题号: 030081 , 字段: objs 中已添加数据: K0603003B\n",
"题号: 006264 , 字段: usages 中已添加数据: 20220929\t2023届高三11班\t0.913\n", "题号: 030081 , 字段: objs 中已添加数据: K0603005B\n",
"题号: 003096 , 字段: usages 中已添加数据: 20220929\t2023届高三11班\t0.870\n", "题号: 010435 , 字段: objs 中已添加数据: K0603004B\n",
"题号: 001472 , 字段: usages 中已添加数据: 20220929\t2023届高三11班\t0.391\n", "题号: 009195 , 字段: objs 中已添加数据: K0604001B\n",
"题号: 006604 , 字段: usages 中已添加数据: 20220929\t2023届高三11班\t0.826\n", "题号: 009195 , 字段: objs 中已添加数据: K0604003B\n",
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"题号: 030028 , 字段: usages 中已添加数据: 20220929\t2023届高三11班\t0.304\n", "题号: 030090 , 字段: objs 中已添加数据: K0605001B\n",
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"题号: 006460 , 字段: usages 中已添加数据: 20220929\t2023届高三11班\t0.348\n", "题号: 009674 , 字段: objs 中已添加数据: K0605003B\n",
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"题号: 030028 , 字段: usages 中已添加数据: 20220929\t2023届高三09班\t0.367\n",
"题号: 006305 , 字段: usages 中已添加数据: 20220929\t2023届高三09班\t0.767\n",
"题号: 006460 , 字段: usages 中已添加数据: 20220929\t2023届高三09班\t0.667\n",
"题号: 006463 , 字段: usages 中已添加数据: 20220929\t2023届高三09班\t0.200\n"
] ]
} }
], ],

View File

@ -2,15 +2,15 @@
"cells": [ "cells": [
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 2, "execution_count": 3,
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [ "source": [
"import os,re,json,time\n", "import os,re,json,time\n",
"\n", "\n",
"\"\"\"---设置原题目id与新题目id---\"\"\"\n", "\"\"\"---设置原题目id与新题目id---\"\"\"\n",
"old_id = \"30035\"\n", "old_id = \"9169\"\n",
"new_id = \"30076\"\n", "new_id = \"30099\"\n",
"\"\"\"---设置完毕---\"\"\"\n", "\"\"\"---设置完毕---\"\"\"\n",
"\n", "\n",
"old_id = old_id.zfill(6)\n", "old_id = old_id.zfill(6)\n",
@ -50,7 +50,7 @@
], ],
"metadata": { "metadata": {
"kernelspec": { "kernelspec": {
"display_name": "Python 3.9.7 ('base')", "display_name": "Python 3.8.8 ('base')",
"language": "python", "language": "python",
"name": "python3" "name": "python3"
}, },
@ -64,12 +64,12 @@
"name": "python", "name": "python",
"nbconvert_exporter": "python", "nbconvert_exporter": "python",
"pygments_lexer": "ipython3", "pygments_lexer": "ipython3",
"version": "3.9.7" "version": "3.8.8"
}, },
"orig_nbformat": 4, "orig_nbformat": 4,
"vscode": { "vscode": {
"interpreter": { "interpreter": {
"hash": "e4cce46d6be9934fbd27f9ca0432556941ea5bdf741d4f4d64c6cd7f8dfa8fba" "hash": "d311ffef239beb3b8f3764271728f3972d7b090c974f8e972fcdeedf230299ac"
} }
} }
}, },

View File

@ -7,14 +7,15 @@
"outputs": [], "outputs": [],
"source": [ "source": [
"#修改起始id,出处,文件名\n", "#修改起始id,出处,文件名\n",
"starting_id = 30016\n", "starting_id = 30100\n",
"origin = \"\"\n", "origin = \"自拟题目\"\n",
"filename = \"临时文件/增加题目.tex\"" "filename = r\"C:\\Users\\weiye\\Documents\\wwy sync\\临时工作区\\自拟题目.tex\"\n",
"editor = \"20220930\\t王伟叶\""
] ]
}, },
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 2, "execution_count": 4,
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [ "source": [
@ -46,11 +47,12 @@
" return NewProblem\n", " return NewProblem\n",
"\n", "\n",
"# 创建新题目\n", "# 创建新题目\n",
"def CreateNewProblem(id,content,origin,dict):\n", "def CreateNewProblem(id,content,origin,dict,editor):\n",
" NewProblem = CreateEmptyProblem(dict[\"000001\"])\n", " NewProblem = CreateEmptyProblem(dict[\"000001\"])\n",
" NewProblem[\"id\"] = str(id).zfill(6)\n", " NewProblem[\"id\"] = str(id).zfill(6)\n",
" NewProblem[\"content\"] = content\n", " NewProblem[\"content\"] = content\n",
" NewProblem[\"origin\"] = origin\n", " NewProblem[\"origin\"] = origin\n",
" NewProblem[\"edit\"] = [editor]\n",
" return NewProblem\n", " return NewProblem\n",
"\n", "\n",
"\n", "\n",
@ -65,7 +67,7 @@
"id = starting_id\n", "id = starting_id\n",
"for p in problems:\n", "for p in problems:\n",
" pid = str(id).zfill(6)\n", " pid = str(id).zfill(6)\n",
" NewProblem = CreateNewProblem(id = pid, content = p, origin = origin, dict = pro_dict)\n", " NewProblem = CreateNewProblem(id = pid, content = p, origin = origin, dict = pro_dict,editor = editor)\n",
" pro_dict[pid] = NewProblem\n", " pro_dict[pid] = NewProblem\n",
" id += 1\n", " id += 1\n",
"\n", "\n",

View File

@ -2,16 +2,16 @@
"cells": [ "cells": [
{ {
"cell_type": "code", "cell_type": "code",
"execution_count": 3, "execution_count": 8,
"metadata": {}, "metadata": {},
"outputs": [ "outputs": [
{ {
"name": "stdout", "name": "stdout",
"output_type": "stream", "output_type": "stream",
"text": [ "text": [
"开始编译教师版本pdf文件: 临时文件/垂直_教师用_20220930.tex\n", "开始编译教师版本pdf文件: 临时文件/第三单元_教师用_20221002.tex\n",
"0\n", "0\n",
"开始编译学生版本pdf文件: 临时文件/垂直_学生用_20220930.tex\n", "开始编译学生版本pdf文件: 临时文件/第三单元_学生用_20221002.tex\n",
"0\n" "0\n"
] ]
} }
@ -26,18 +26,21 @@
"\"\"\"---设置题目列表---\"\"\"\n", "\"\"\"---设置题目列表---\"\"\"\n",
"#留空为编译全题库\n", "#留空为编译全题库\n",
"problems = r\"\"\"\n", "problems = r\"\"\"\n",
"000178,000181,000182,000184,000187,000189,000191,000192,000212,000294,000297,000298,000299,000304,000305,000615,001605,001606,001619,001620,001621,001624,001628,001629,001630,001633,001636,001637,001641,001656,001658,001659,001662,001670,001676,001679,001680,001701,001710,001950,001968,001973,001984,003454,003458,003460,003462,003468,003478,003480,003486,003489,003494,003495,003500,003816,003830,003846,003879,003891,003950,003968,003999,004075,004117,004133,004136,004159,004180,004223,004243,004306,004367,004398,004437,004460,004479,004505,004656,004696,004719,004761,009133,009146,009153,009162,009177,009184,009416,009690,009694,009695,009696,009700,009701,009867,009869,009870,009871,010000,010449,010461,010465,010467,010468,010470,010474,010479,010480,010483,010508,010531,010709,010710,010713,010718,010720,010721,010729,010733,010734,010735,010736,010737,010739\n", "a\n",
"\n",
"\n", "\n",
"\"\"\"\n", "\"\"\"\n",
"\"\"\"---设置题目列表结束---\"\"\"\n", "\"\"\"---设置题目列表结束---\"\"\"\n",
"\n", "\n",
"\"\"\"---设置文件名---\"\"\"\n", "\"\"\"---设置文件名---\"\"\"\n",
"#目录和文件的分隔务必用/\n", "#目录和文件的分隔务必用/\n",
"filename = \"临时文件/垂直\"\n", "filename = \"临时文件/第三单元\"\n",
"\"\"\"---设置文件名结束---\"\"\"\n", "\"\"\"---设置文件名结束---\"\"\"\n",
"\n", "\n",
"\n", "\n",
"if problems.strip()[0] == \"a\":\n",
" with open(\"临时文件/题号筛选.txt\",\"r\",encoding = \"utf8\") as f:\n",
" problems = f.read()\n",
"\n",
"#读取系统日期\n", "#读取系统日期\n",
"current_time = time.localtime()\n", "current_time = time.localtime()\n",
"time_string = \"_\"+str(current_time.tm_year).zfill(4)+str(current_time.tm_mon).zfill(2)+str(current_time.tm_mday).zfill(2)\n", "time_string = \"_\"+str(current_time.tm_year).zfill(4)+str(current_time.tm_mon).zfill(2)+str(current_time.tm_mday).zfill(2)\n",
@ -164,7 +167,7 @@
], ],
"metadata": { "metadata": {
"kernelspec": { "kernelspec": {
"display_name": "Python 3.9.7 ('base')", "display_name": "Python 3.8.8 ('base')",
"language": "python", "language": "python",
"name": "python3" "name": "python3"
}, },
@ -178,12 +181,12 @@
"name": "python", "name": "python",
"nbconvert_exporter": "python", "nbconvert_exporter": "python",
"pygments_lexer": "ipython3", "pygments_lexer": "ipython3",
"version": "3.9.7" "version": "3.8.8"
}, },
"orig_nbformat": 4, "orig_nbformat": 4,
"vscode": { "vscode": {
"interpreter": { "interpreter": {
"hash": "e4cce46d6be9934fbd27f9ca0432556941ea5bdf741d4f4d64c6cd7f8dfa8fba" "hash": "d311ffef239beb3b8f3764271728f3972d7b090c974f8e972fcdeedf230299ac"
} }
} }
}, },

View File

@ -4451,7 +4451,8 @@
"objs": [ "objs": [
"K0610001B", "K0610001B",
"K0608001B", "K0608001B",
"K0609007B" "K0609007B",
"K0601004B"
], ],
"tags": [ "tags": [
"第六单元" "第六单元"
@ -40851,7 +40852,9 @@
"content": "判断下列命题的真假, 在横线上用``T''或``F''表示.\n\\begin{enumerate}[\\blank{30}(1)]\n\\item 空间任意三点确定一个平面;\\\\ \n\\item 空间任意两条直线确定一个平面;\\\\ \n\\item 空间两条平行直线确定一个平面;\\\\ \n\\item 空间一条直线和不在该直线上的一个点确定一个平面;\\\\ \n\\item 空间一个点和不通过该点的一条直线确定一个平面;\\\\ \n\\item 空间两条没有交点的直线必平行;\\\\ \n\\item 若空间四边形$ABCD$若满足$AB=BC=CD=DA$, 则它一定是菱形;\\\\ \n\\item 若空间的一条直线如果和一对平行直线之一相交, 则一定与另一条也相交;\\\\ \n\\item 若空间三点$A,B,C$若满足$AB^2+BC^2=CA^2$, 则$\\triangle ABC$是以$B$为直角顶点的直角三角形;\\\\ \n\\item 若空间三条直线两两相交, 则通过它们中至少两条的平面有且仅有$1$个;\\\\ \n\\item 若空间三条直线两两相交, 则通过它们中至少两条的平面有且仅有$3$个.\\\\ \n\\end{enumerate}", "content": "判断下列命题的真假, 在横线上用``T''或``F''表示.\n\\begin{enumerate}[\\blank{30}(1)]\n\\item 空间任意三点确定一个平面;\\\\ \n\\item 空间任意两条直线确定一个平面;\\\\ \n\\item 空间两条平行直线确定一个平面;\\\\ \n\\item 空间一条直线和不在该直线上的一个点确定一个平面;\\\\ \n\\item 空间一个点和不通过该点的一条直线确定一个平面;\\\\ \n\\item 空间两条没有交点的直线必平行;\\\\ \n\\item 若空间四边形$ABCD$若满足$AB=BC=CD=DA$, 则它一定是菱形;\\\\ \n\\item 若空间的一条直线如果和一对平行直线之一相交, 则一定与另一条也相交;\\\\ \n\\item 若空间三点$A,B,C$若满足$AB^2+BC^2=CA^2$, 则$\\triangle ABC$是以$B$为直角顶点的直角三角形;\\\\ \n\\item 若空间三条直线两两相交, 则通过它们中至少两条的平面有且仅有$1$个;\\\\ \n\\item 若空间三条直线两两相交, 则通过它们中至少两条的平面有且仅有$3$个.\\\\ \n\\end{enumerate}",
"objs": [ "objs": [
"K0602003B", "K0602003B",
"K0606003B" "K0606003B",
"K0602001B",
"K0602002B"
], ],
"tags": [ "tags": [
"第一单元", "第一单元",
@ -40877,7 +40880,11 @@
"001596": { "001596": {
"id": "001596", "id": "001596",
"content": "已知不共线的三点$A,B,C$均在平面$\\alpha$上. 证明以下命题(每一步均需说明根据):\\\\ \n(1) 直线$AB$上的每一点都在平面$\\alpha$上;\\\\ \n(2) 三角形$ABC$的重心$G$在平面$\\alpha$上.", "content": "已知不共线的三点$A,B,C$均在平面$\\alpha$上. 证明以下命题(每一步均需说明根据):\\\\ \n(1) 直线$AB$上的每一点都在平面$\\alpha$上;\\\\ \n(2) 三角形$ABC$的重心$G$在平面$\\alpha$上.",
"objs": [], "objs": [
"K0601003B",
"K0601005B",
"K0601006B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -40901,7 +40908,9 @@
"001597": { "001597": {
"id": "001597", "id": "001597",
"content": "指出图中正方体各线段所在直线的位置关系(相交, 平行或异面):\n\\begin{center}\n\\begin{tikzpicture}\n \\draw (0,0) node [below left] {$A$} coordinate (A) --++ (3,0) node [below right] {$B$} coordinate (B) --++ (45:{3/2}) node [right] {$C$} coordinate (C)\n --++ (0,3) node [above right] {$C'$} coordinate (C1)\n --++ (-3,0) node [above left] {$D'$} coordinate (D1) --++ (225:{3/2}) node [left] {$A'$} coordinate (A1) -- cycle;\n \\draw (A) ++ (3,3) node [right] {$B'$} coordinate (B1) -- (B) (B1) --++ (45:{3/2}) (B1) --++ (-3,0);\n \\draw [dashed] (A) --++ (45:{3/2}) node [left] {$D$} coordinate (D) --++ (3,0) (D) --++ (0,3);\n \\draw [dashed] (D1) -- (B) (A1) -- (C);\n \\draw (C) -- (B1) (A1) -- (C1);\n\\end{tikzpicture}\n\\end{center}\n\\begin{enumerate}[\\blank{50}(1)]\n\\item $AB$和$CC'$;\\\\ \n\\item $A'C$和$BD'$;\\\\ \n\\item $AA'$和$CB'$;\\\\ \n\\item $A'C'$和$CB'$;\\\\ \n\\item $A'B'$和$DC$;\\\\ \n\\item $BD'$和$DC$.\\\\ \n\\end{enumerate}", "content": "指出图中正方体各线段所在直线的位置关系(相交, 平行或异面):\n\\begin{center}\n\\begin{tikzpicture}\n \\draw (0,0) node [below left] {$A$} coordinate (A) --++ (3,0) node [below right] {$B$} coordinate (B) --++ (45:{3/2}) node [right] {$C$} coordinate (C)\n --++ (0,3) node [above right] {$C'$} coordinate (C1)\n --++ (-3,0) node [above left] {$D'$} coordinate (D1) --++ (225:{3/2}) node [left] {$A'$} coordinate (A1) -- cycle;\n \\draw (A) ++ (3,3) node [right] {$B'$} coordinate (B1) -- (B) (B1) --++ (45:{3/2}) (B1) --++ (-3,0);\n \\draw [dashed] (A) --++ (45:{3/2}) node [left] {$D$} coordinate (D) --++ (3,0) (D) --++ (0,3);\n \\draw [dashed] (D1) -- (B) (A1) -- (C);\n \\draw (C) -- (B1) (A1) -- (C1);\n\\end{tikzpicture}\n\\end{center}\n\\begin{enumerate}[\\blank{50}(1)]\n\\item $AB$和$CC'$;\\\\ \n\\item $A'C$和$BD'$;\\\\ \n\\item $AA'$和$CB'$;\\\\ \n\\item $A'C'$和$CB'$;\\\\ \n\\item $A'B'$和$DC$;\\\\ \n\\item $BD'$和$DC$.\\\\ \n\\end{enumerate}",
"objs": [], "objs": [
"K0606001B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -40977,7 +40986,9 @@
"001600": { "001600": {
"id": "001600", "id": "001600",
"content": "已知$m,n$是异面直线, 直线$s$分别与$m,n$相交于点$A,B$, 直线$t$分别与$m,n$相交于点$C,D$, $A,B,C,D$两两不同. 求证: $s,t$也是异面直线.", "content": "已知$m,n$是异面直线, 直线$s$分别与$m,n$相交于点$A,B$, 直线$t$分别与$m,n$相交于点$C,D$, $A,B,C,D$两两不同. 求证: $s,t$也是异面直线.",
"objs": [], "objs": [
"K0606002B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -41051,7 +41062,9 @@
"001603": { "001603": {
"id": "001603", "id": "001603",
"content": "如图, 在正方体$ABCD-A_1B_1C_1D_1$中, $E,F$分别是棱$A_1B_1$和棱$B_1C_1$的中点.\\\\ \n(1) 求异面直线$A_1D$和$BC_1$所成角的大小;\\\\ \n(2) 求异面直线$BE$和$CF$所成角的余弦值.\n\\begin{center}\n\\begin{tikzpicture}\n \\draw (0,0) node [below left] {$A$} coordinate (A) --++ (3,0) node [below right] {$B$} coordinate (B) --++ (45:{3/2}) node [right] {$C$} coordinate (C)\n --++ (0,3) node [above right] {$C_1$} coordinate (C1)\n --++ (-3,0) node [above left] {$D_1$} coordinate (D1) --++ (225:{3/2}) node [left] {$A_1$} coordinate (A1) -- cycle;\n \\draw (A) ++ (3,3) node [right] {$B_1$} coordinate (B1) -- (B) (B1) --++ (45:{3/2}) (B1) --++ (-3,0);\n \\draw [dashed] (A) --++ (45:{3/2}) node [left] {$D$} coordinate (D) --++ (3,0) (D) --++ (0,3);\n \\draw [dashed] (A1) -- (D);\n \\draw (C1) -- (B) -- ($(A1)!0.5!(B1)$) node [above] {$E$};\n \\draw (C) -- ($(C1)!0.5!(B1)$) node [above left] {$F$};\n\\end{tikzpicture}\n\\end{center}", "content": "如图, 在正方体$ABCD-A_1B_1C_1D_1$中, $E,F$分别是棱$A_1B_1$和棱$B_1C_1$的中点.\\\\ \n(1) 求异面直线$A_1D$和$BC_1$所成角的大小;\\\\ \n(2) 求异面直线$BE$和$CF$所成角的余弦值.\n\\begin{center}\n\\begin{tikzpicture}\n \\draw (0,0) node [below left] {$A$} coordinate (A) --++ (3,0) node [below right] {$B$} coordinate (B) --++ (45:{3/2}) node [right] {$C$} coordinate (C)\n --++ (0,3) node [above right] {$C_1$} coordinate (C1)\n --++ (-3,0) node [above left] {$D_1$} coordinate (D1) --++ (225:{3/2}) node [left] {$A_1$} coordinate (A1) -- cycle;\n \\draw (A) ++ (3,3) node [right] {$B_1$} coordinate (B1) -- (B) (B1) --++ (45:{3/2}) (B1) --++ (-3,0);\n \\draw [dashed] (A) --++ (45:{3/2}) node [left] {$D$} coordinate (D) --++ (3,0) (D) --++ (0,3);\n \\draw [dashed] (A1) -- (D);\n \\draw (C1) -- (B) -- ($(A1)!0.5!(B1)$) node [above] {$E$};\n \\draw (C) -- ($(C1)!0.5!(B1)$) node [above left] {$F$};\n\\end{tikzpicture}\n\\end{center}",
"objs": [], "objs": [
"K0607004B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -85782,7 +85795,10 @@
"003454": { "003454": {
"id": "003454", "id": "003454",
"content": "对于空间三条直线$a,b,c$, 若$a\\perp b$, $b\\perp c$, 则$a$与$c$\\bracket{20}.\n\\twoch{一定相交}{一定平行}{一定异面}{平行、相交、异面都有可能}", "content": "对于空间三条直线$a,b,c$, 若$a\\perp b$, $b\\perp c$, 则$a$与$c$\\bracket{20}.\n\\twoch{一定相交}{一定平行}{一定异面}{平行、相交、异面都有可能}",
"objs": [], "objs": [
"K0606001B",
"K0606003B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -95312,7 +95328,9 @@
"003875": { "003875": {
"id": "003875", "id": "003875",
"content": "在长方体$ABCD-A_1B_1C_1D_1$中, $B_1C$和$C_1D$与底面所成的角分别为$60^\\circ$和$45^\\circ$, 则异面直线$B_1C$和$C_1D$所成的角的余弦值为\\bracket{20}.\n\\fourch{$\\dfrac{\\sqrt{3}}6$}{$\\dfrac{\\sqrt{2}}{6}$}{$\\dfrac{\\sqrt{6}}{3}$}{$\\dfrac{\\sqrt{6}}{4}$}", "content": "在长方体$ABCD-A_1B_1C_1D_1$中, $B_1C$和$C_1D$与底面所成的角分别为$60^\\circ$和$45^\\circ$, 则异面直线$B_1C$和$C_1D$所成的角的余弦值为\\bracket{20}.\n\\fourch{$\\dfrac{\\sqrt{3}}6$}{$\\dfrac{\\sqrt{2}}{6}$}{$\\dfrac{\\sqrt{6}}{3}$}{$\\dfrac{\\sqrt{6}}{4}$}",
"objs": [], "objs": [
"K0607004B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -111646,7 +111664,9 @@
"004539": { "004539": {
"id": "004539", "id": "004539",
"content": "如图是正四面体的平面展开图, $M,N,G$分别为$DE,BE,FE$的中点, 则在这个四面体中, 异面直线$MN$与$CG$所成的角的大小为\\blank{50}.\n\\begin{center}\n \\begin{tikzpicture}[scale = 1.5]\n \\draw (0,0) node [below] {$E$} coordinate (E);\n \\draw (1,0) node [below right] {$C$} coordinate (C);\n \\draw (-1,0) node [below left] {$B$} coordinate (B);\n \\draw (0,{sqrt(3)}) node [above] {$A$} coordinate (A);\n \\draw ($(A)!0.5!(B)$) node [left] {$D$} coordinate (D);\n \\draw ($(A)!0.5!(C)$) node [right] {$F$} coordinate (F);\n \\draw ($(E)!0.5!(F)$) node [above] {$G$} coordinate (G);\n \\draw ($(D)!0.5!(E)$) node [above] {$M$} coordinate (M);\n \\draw ($(B)!0.5!(E)$) node [below] {$N$} coordinate (N);\n \\draw (A) -- (B) -- (C) -- cycle (D) -- (E) -- (F) -- cycle;\n \\draw (M) -- (N) (C) -- (G);\n \\end{tikzpicture}\n\\end{center}", "content": "如图是正四面体的平面展开图, $M,N,G$分别为$DE,BE,FE$的中点, 则在这个四面体中, 异面直线$MN$与$CG$所成的角的大小为\\blank{50}.\n\\begin{center}\n \\begin{tikzpicture}[scale = 1.5]\n \\draw (0,0) node [below] {$E$} coordinate (E);\n \\draw (1,0) node [below right] {$C$} coordinate (C);\n \\draw (-1,0) node [below left] {$B$} coordinate (B);\n \\draw (0,{sqrt(3)}) node [above] {$A$} coordinate (A);\n \\draw ($(A)!0.5!(B)$) node [left] {$D$} coordinate (D);\n \\draw ($(A)!0.5!(C)$) node [right] {$F$} coordinate (F);\n \\draw ($(E)!0.5!(F)$) node [above] {$G$} coordinate (G);\n \\draw ($(D)!0.5!(E)$) node [above] {$M$} coordinate (M);\n \\draw ($(B)!0.5!(E)$) node [below] {$N$} coordinate (N);\n \\draw (A) -- (B) -- (C) -- cycle (D) -- (E) -- (F) -- cycle;\n \\draw (M) -- (N) (C) -- (G);\n \\end{tikzpicture}\n\\end{center}",
"objs": [], "objs": [
"K0607004B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -146638,14 +146658,14 @@
}, },
"005993": { "005993": {
"id": "005993", "id": "005993",
"content": "在同一个坐标系内, 为了得到$y=3\\sin (2x+\\dfrac{\\pi}4)$的图像, 只需将$y=3\\cos 2x$的图像\\bracket{20}.\n\\fourch{向左平移$\\dfrac{\\pi}4$}{向右平移$\\dfrac{\\pi}4$}{向左平移$\\dfrac{\\pi}8$}{向右平移$\\dfrac{\\pi}8$}\n解答在这里 令$f(x)=3\\cos 2x$, 则\n\\begin{align*}f(x-m)&=3\\cos 2(x-m)=3\\cos (2x-2m)=3\\cos (2m-2x)=3\\sin [\\dfrac{\\pi}2-(2m-2x)] \\\\ &=3\\sin (2x+\\dfrac{\\pi}2-2m).\n\\end{align*}\n按题意应有$3\\sin (2x+\\dfrac{\\pi}2-2m)=3\\sin (2x+\\dfrac{\\pi}4)$.\n令$\\dfrac{\\pi}2-2m=\\dfrac{\\pi}4$, 得$m=\\dfrac{\\pi}8$, 故选D.\\\\\n也可以这样解:\n因为$f(x)=3\\sin (2x+\\dfrac{\\pi}4)=3\\cos [(2x+\\dfrac{\\pi}4)-\\dfrac{\\pi}2]=3\\cos (2x-\\dfrac{\\pi}4)=3\\cos [2(x-\\dfrac{\\pi}8)]=f(x-\\dfrac{\\pi}8)$,\n所以选D.", "content": "在同一个坐标系内, 为了得到$y=3\\sin (2x+\\dfrac{\\pi}4)$的图像, 只需将$y=3\\cos 2x$的图像\\bracket{20}.\n\\fourch{向左平移$\\dfrac{\\pi}4$}{向右平移$\\dfrac{\\pi}4$}{向左平移$\\dfrac{\\pi}8$}{向右平移$\\dfrac{\\pi}8$}",
"objs": [], "objs": [],
"tags": [ "tags": [
"第三单元" "第三单元"
], ],
"genre": "选择题", "genre": "选择题",
"ans": "", "ans": "D",
"solution": "", "solution": "令$f(x)=3\\cos 2x$, 则\n\\begin{align*}f(x-m)&=3\\cos 2(x-m)=3\\cos (2x-2m)=3\\cos (2m-2x)=3\\sin [\\dfrac{\\pi}2-(2m-2x)] \\\\ &=3\\sin (2x+\\dfrac{\\pi}2-2m).\n\\end{align*}\n按题意应有$3\\sin (2x+\\dfrac{\\pi}2-2m)=3\\sin (2x+\\dfrac{\\pi}4)$.\n令$\\dfrac{\\pi}2-2m=\\dfrac{\\pi}4$, 得$m=\\dfrac{\\pi}8$, 故选D.\\\\\n也可以这样解:\n因为$f(x)=3\\sin (2x+\\dfrac{\\pi}4)=3\\cos [(2x+\\dfrac{\\pi}4)-\\dfrac{\\pi}2]=3\\cos (2x-\\dfrac{\\pi}4)=3\\cos [2(x-\\dfrac{\\pi}8)]=f(x-\\dfrac{\\pi}8)$,\n所以选D.",
"duration": -1, "duration": -1,
"usages": [], "usages": [],
"origin": "代数精编第四章三角函数", "origin": "代数精编第四章三角函数",
@ -216699,7 +216719,9 @@
"20220726\t王伟叶" "20220726\t王伟叶"
], ],
"same": [], "same": [],
"related": [], "related": [
"030099"
],
"remark": "", "remark": "",
"space": "12ex" "space": "12ex"
}, },
@ -217231,7 +217253,10 @@
"009195": { "009195": {
"id": "009195", "id": "009195",
"content": "画一个底面边长是$3\\text{cm}$、高是$4.5\\text{cm}$的正三棱柱的直观图.", "content": "画一个底面边长是$3\\text{cm}$、高是$4.5\\text{cm}$的正三棱柱的直观图.",
"objs": [], "objs": [
"K0604001B",
"K0604003B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -227593,7 +227618,9 @@
"009666": { "009666": {
"id": "009666", "id": "009666",
"content": "已知$a$、$b$、$c$是空间的三条直线, $a\\parallel b$, 且$c$与$a$、$b$\n都相交. 求证: 直线$a$、$b$、$c$在同一平面上.", "content": "已知$a$、$b$、$c$是空间的三条直线, $a\\parallel b$, 且$c$与$a$、$b$\n都相交. 求证: 直线$a$、$b$、$c$在同一平面上.",
"objs": [], "objs": [
"K0602003B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -227740,7 +227767,9 @@
"009673": { "009673": {
"id": "009673", "id": "009673",
"content": "画出如图水平放置的直角梯形$OABC$的直观图.\n\\begin{center}\n\\begin{tikzpicture}[>=latex,scale = 0.5]\n\\draw [->] (-1.5,0) -- (5.5,0) node [below] {$x$};\n\\draw [->] (0,-1.5) -- (0,4) node [left] {$y$};\n\\draw (0,0) node [below left] {$O$};\n\\foreach \\i in {-1,1,2,3,4,5} {\\draw (\\i,0.2) -- (\\i,0);};\n\\foreach \\i in {-1,1,2,3} {\\draw (0.2,\\i) -- (0,\\i);};\n\\draw (4,0) node [below] {$C$} -- (2,2) node [above] {$B$} -- (0,2) node [left] {$A$};\n\\end{tikzpicture}\n\\end{center}", "content": "画出如图水平放置的直角梯形$OABC$的直观图.\n\\begin{center}\n\\begin{tikzpicture}[>=latex,scale = 0.5]\n\\draw [->] (-1.5,0) -- (5.5,0) node [below] {$x$};\n\\draw [->] (0,-1.5) -- (0,4) node [left] {$y$};\n\\draw (0,0) node [below left] {$O$};\n\\foreach \\i in {-1,1,2,3,4,5} {\\draw (\\i,0.2) -- (\\i,0);};\n\\foreach \\i in {-1,1,2,3} {\\draw (0.2,\\i) -- (0,\\i);};\n\\draw (4,0) node [below] {$C$} -- (2,2) node [above] {$B$} -- (0,2) node [left] {$A$};\n\\end{tikzpicture}\n\\end{center}",
"objs": [], "objs": [
"K0604002B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -227761,7 +227790,10 @@
"009674": { "009674": {
"id": "009674", "id": "009674",
"content": "如图, 在长方体$ABCD-A_1B_1C_1D_1$中, 直线$A_1C$与$BD_1$相交吗? 为什么?\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0,0) node [below left] {$A$} coordinate (A) --++ (3,0) node [below right] {$B$} coordinate (B) --++ (45:{3/2}) node [right] {$C$} coordinate (C)\n--++ (0,2) node [above right] {$C_1$} coordinate (C1)\n--++ (-3,0) node [above left] {$D_1$} coordinate (D1) --++ (225:{3/2}) node [left] {$A_1$} coordinate (A1) -- cycle;\n\\draw (A) ++ (3,2) node [right] {$B_1$} coordinate (B1) -- (B) (B1) --++ (45:{3/2}) (B1) --++ (-3,0);\n\\draw [dashed] (A) --++ (45:{3/2}) node [left] {$D$} coordinate (D) --++ (3,0) (D) --++ (0,2);\n\\draw [dashed] (B) -- (D1) (C) -- (A1);\n\\end{tikzpicture}\n\\end{center}", "content": "如图, 在长方体$ABCD-A_1B_1C_1D_1$中, 直线$A_1C$与$BD_1$相交吗? 为什么?\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0,0) node [below left] {$A$} coordinate (A) --++ (3,0) node [below right] {$B$} coordinate (B) --++ (45:{3/2}) node [right] {$C$} coordinate (C)\n--++ (0,2) node [above right] {$C_1$} coordinate (C1)\n--++ (-3,0) node [above left] {$D_1$} coordinate (D1) --++ (225:{3/2}) node [left] {$A_1$} coordinate (A1) -- cycle;\n\\draw (A) ++ (3,2) node [right] {$B_1$} coordinate (B1) -- (B) (B1) --++ (45:{3/2}) (B1) --++ (-3,0);\n\\draw [dashed] (A) --++ (45:{3/2}) node [left] {$D$} coordinate (D) --++ (3,0) (D) --++ (0,2);\n\\draw [dashed] (B) -- (D1) (C) -- (A1);\n\\end{tikzpicture}\n\\end{center}",
"objs": [], "objs": [
"K0605002B",
"K0605003B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -244839,7 +244871,9 @@
"010435": { "010435": {
"id": "010435", "id": "010435",
"content": "如图, 已知直线$l$与平面$\\alpha$相交于点$O$, $A$、$B \\in l$, $C$、$D\\in \\alpha$, 且$AC\\parallel BD$. 求证: $O$、$C$、$D$三点共线.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw [name path = plane] (0,0) -- (3,0) -- (4.5,1.5) -- (1.5,1.5) -- (0,0) ++ (0.5,0) node [above] {$\\alpha$};\n\\filldraw (1.5,0.5) circle (0.03) node [left] {$O$} coordinate (O);\n\\filldraw (2.7,0.8) circle (0.03) node [below] {$C$} coordinate (C);\n\\filldraw ($(O)!0.5!(C)$) circle (0.03) node [below] {$D$} coordinate (D);\n\\filldraw (2.4,1.6) circle (0.03) node [above left] {$A$} coordinate (A);\n\\filldraw ($(O)!0.5!(A)$) circle (0.03) node [above left] {$B$} coordinate (B);\n\\draw (O) -- ($(O)!1.4!(A)$) node [right] {$l$};\n\\draw (B) -- (D) (A) -- (C);\n\\path [name path = AO] ($(O)!1.4!(A)$) -- ($(O)!-1!(A)$);\n\\path [name intersections = {of = AO and plane, by = T}];\n\\draw [dashed] (O) -- (T);\n\\draw (T) -- ($(O)!-1!(A)$);\n\\end{tikzpicture}\n\\end{center}", "content": "如图, 已知直线$l$与平面$\\alpha$相交于点$O$, $A$、$B \\in l$, $C$、$D\\in \\alpha$, 且$AC\\parallel BD$. 求证: $O$、$C$、$D$三点共线.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw [name path = plane] (0,0) -- (3,0) -- (4.5,1.5) -- (1.5,1.5) -- (0,0) ++ (0.5,0) node [above] {$\\alpha$};\n\\filldraw (1.5,0.5) circle (0.03) node [left] {$O$} coordinate (O);\n\\filldraw (2.7,0.8) circle (0.03) node [below] {$C$} coordinate (C);\n\\filldraw ($(O)!0.5!(C)$) circle (0.03) node [below] {$D$} coordinate (D);\n\\filldraw (2.4,1.6) circle (0.03) node [above left] {$A$} coordinate (A);\n\\filldraw ($(O)!0.5!(A)$) circle (0.03) node [above left] {$B$} coordinate (B);\n\\draw (O) -- ($(O)!1.4!(A)$) node [right] {$l$};\n\\draw (B) -- (D) (A) -- (C);\n\\path [name path = AO] ($(O)!1.4!(A)$) -- ($(O)!-1!(A)$);\n\\path [name intersections = {of = AO and plane, by = T}];\n\\draw [dashed] (O) -- (T);\n\\draw (T) -- ($(O)!-1!(A)$);\n\\end{tikzpicture}\n\\end{center}",
"objs": [], "objs": [
"K0603004B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -245217,7 +245251,9 @@
"010453": { "010453": {
"id": "010453", "id": "010453",
"content": "如图, 已知不在同一平面上的三条直线$a$、$b$、$c$相交于点$O$, $M$、$P$是直线$a$上的两点, $N$、$Q$分别是直线$b$、$c$上与点$O$不重合的点. 求证: $MN$和$PQ$是异面直线.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0.3,0.6) --++ (3.1,0) --++ (1.1,1.1) --++ (-3.1,0) -- (0.3,0.6) ++ (0.5,0) node [above] {$\\alpha$};\n\\draw (1.3,1.2) node [below left] {$O$} coordinate (O);\n\\draw (2.7,2.5) node [above] {$P$} coordinate (P);\n\\draw ($(O)!0.7!(P)$) node [above] {$M$} coordinate (M);\n\\draw (O) -- ($(O)!1.5!(P)$) node [right] {$a$} coordinate (a);\n\\draw (2.2,1) node [below] {$N$} coordinate (N);\n\\draw (2.9,1.5) node [below] {$Q$} coordinate (Q);\n\\draw (O) -- ($(O)!1.8!(N)$) node [right] {$b$} coordinate (b);\n\\draw (O) -- ($(O)!1.2!(Q)$) node [right] {$c$} coordinate (c);\n\\draw (M) -- (N) (P) -- (Q);\n\\end{tikzpicture}\n\\end{center}", "content": "如图, 已知不在同一平面上的三条直线$a$、$b$、$c$相交于点$O$, $M$、$P$是直线$a$上的两点, $N$、$Q$分别是直线$b$、$c$上与点$O$不重合的点. 求证: $MN$和$PQ$是异面直线.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0.3,0.6) --++ (3.1,0) --++ (1.1,1.1) --++ (-3.1,0) -- (0.3,0.6) ++ (0.5,0) node [above] {$\\alpha$};\n\\draw (1.3,1.2) node [below left] {$O$} coordinate (O);\n\\draw (2.7,2.5) node [above] {$P$} coordinate (P);\n\\draw ($(O)!0.7!(P)$) node [above] {$M$} coordinate (M);\n\\draw (O) -- ($(O)!1.5!(P)$) node [right] {$a$} coordinate (a);\n\\draw (2.2,1) node [below] {$N$} coordinate (N);\n\\draw (2.9,1.5) node [below] {$Q$} coordinate (Q);\n\\draw (O) -- ($(O)!1.8!(N)$) node [right] {$b$} coordinate (b);\n\\draw (O) -- ($(O)!1.2!(Q)$) node [right] {$c$} coordinate (c);\n\\draw (M) -- (N) (P) -- (Q);\n\\end{tikzpicture}\n\\end{center}",
"objs": [], "objs": [
"K0606002B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -245238,7 +245274,9 @@
"010454": { "010454": {
"id": "010454", "id": "010454",
"content": "如图, 在四面体$ABCD$中, $AC=8$, $BD=6$, $M$、$N$分别为$AB$、$CD$的中点, 并且异面直线$AC$与$BD$所成的角为$90^\\circ$. 求$MN$的长.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0,0) node [left] {$D$} coordinate (D);\n\\draw (3,0) node [right] {$B$} coordinate (B);\n\\draw (1.4,2.3) node [above] {$A$} coordinate (A);\n\\draw (2,-0.8) node [below] {$C$} coordinate (C);\n\\draw ($(B)!0.5!(C)$) node [below right] {$N$} coordinate (N);\n\\draw ($(A)!0.5!(D)$) node [above left] {$M$} coordinate (M);\n\\draw (A) -- (C) (B) -- (C) -- (D) (D) -- (A) -- (B);\n\\draw [dashed] (M) -- (N) (B) -- (D);\n\\end{tikzpicture}\n\\end{center}", "content": "如图, 在四面体$ABCD$中, $AC=8$, $BD=6$, $M$、$N$分别为$AB$、$CD$的中点, 并且异面直线$AC$与$BD$所成的角为$90^\\circ$. 求$MN$的长.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0,0) node [left] {$D$} coordinate (D);\n\\draw (3,0) node [right] {$B$} coordinate (B);\n\\draw (1.4,2.3) node [above] {$A$} coordinate (A);\n\\draw (2,-0.8) node [below] {$C$} coordinate (C);\n\\draw ($(B)!0.5!(C)$) node [below right] {$N$} coordinate (N);\n\\draw ($(A)!0.5!(D)$) node [above left] {$M$} coordinate (M);\n\\draw (A) -- (C) (B) -- (C) -- (D) (D) -- (A) -- (B);\n\\draw [dashed] (M) -- (N) (B) -- (D);\n\\end{tikzpicture}\n\\end{center}",
"objs": [], "objs": [
"K0607001B"
],
"tags": [ "tags": [
"第六单元" "第六单元"
], ],
@ -286270,5 +286308,485 @@
"related": [], "related": [],
"remark": "", "remark": "",
"space": "" "space": ""
},
"030077": {
"id": "030077",
"content": "用集合符号表述下列语句:\\\\\n(1) 点$A$在平面$\\alpha$上, 并且平面$\\alpha$经过直线$AB$:\\blank{50};\\\\ \n(2) 点$C$不在平面$\\beta$上, 并且直线$CD$平行于平面$\\beta$:\\blank{50}.",
"objs": [
"K0601002B"
],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030078": {
"id": "030078",
"content": "画出下列符号语言表示的点、直线、平面的位置关系的示意图.\\\\ \n(1) $a\\subset \\alpha$, $b\\subset \\alpha$, $a\\cap b=A$;\\\\\n(2) $a\\subset \\alpha$, $b\\cap \\alpha =A$, $A\\notin a$.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "空中课堂必修第三册例题与习题",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030079": {
"id": "030079",
"content": "直线$l$经过平面$\\alpha$内一点$A$和平面$\\alpha$外一点$B$, 则直线$l$与平面$\\alpha$有几个公共点? 为什么?",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "空中课堂必修第三册例题与习题",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030080": {
"id": "030080",
"content": "已知三条直线$l_1$, $l_2$和$l_3$两两相交, 且不交于同一个点. 求证: 直线$l_1l_2$和$l_3$在同一个平面上.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "空中课堂必修第三册例题与习题",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030081": {
"id": "030081",
"content": "已知$E$、$F$分别是正方体$ABCD-A_1B_1C_1D_1$的棱$A_1B_1$、$B_1C_1$的中点. 画出由$D$、$E$、$F$确定的平面与正方体表面的交线.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\def\\l{3}\n\\draw (0,0,0) node [below left] {$A$} coordinate (A);\n\\draw (A) ++ (\\l,0,0) node [below right] {$B$} coordinate (B);\n\\draw (A) ++ (\\l,0,-\\l) node [right] {$C$} coordinate (C);\n\\draw (A) ++ (0,0,-\\l) node [left] {$D$} coordinate (D);\n\\draw (A) -- (B) -- (C);\n\\draw [dashed] (A) -- (D) -- (C);\n\\draw (A) ++ (0,\\l,0) node [left] {$A_1$} coordinate (A1);\n\\draw (B) ++ (0,\\l,0) node [right] {$B_1$} coordinate (B1);\n\\draw (C) ++ (0,\\l,0) node [above right] {$C_1$} coordinate (C1);\n\\draw (D) ++ (0,\\l,0) node [above left] {$D_1$} coordinate (D1);\n\\draw (A1) -- (B1) -- (C1) -- (D1) -- cycle;\n\\draw (A) -- (A1) (B) -- (B1) (C) -- (C1);\n\\draw [dashed] (D) -- (D1);\n\\draw ($(A1)!0.5!(B1)$) node [above] {$E$} coordinate (E);\n\\draw ($(B1)!0.5!(C1)$) node [above] {$F$} coordinate (F);\n\\filldraw (D) circle (0.03) (E) circle (0.03) (F) circle (0.03);\n\\end{tikzpicture}\n\\end{center}",
"objs": [
"K0603003B",
"K0603005B"
],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "空中课堂必修第三册例题与习题",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030082": {
"id": "030082",
"content": "如图, 已知$E$、$F$分别是正方体$ABCD-A_1B_1C_1D_1$的棱$A_1A$、$C_1C$的中点. 求证: 四边形$BED_1F$是平行四边形.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\def\\l{2}\n\\draw (0,0,0) node [below left] {$A$} coordinate (A);\n\\draw (A) ++ (\\l,0,0) node [below right] {$B$} coordinate (B);\n\\draw (A) ++ (\\l,0,-\\l) node [right] {$C$} coordinate (C);\n\\draw (A) ++ (0,0,-\\l) node [left] {$D$} coordinate (D);\n\\draw (A) -- (B) -- (C);\n\\draw [dashed] (A) -- (D) -- (C);\n\\draw (A) ++ (0,\\l,0) node [left] {$A_1$} coordinate (A1);\n\\draw (B) ++ (0,\\l,0) node [right] {$B_1$} coordinate (B1);\n\\draw (C) ++ (0,\\l,0) node [above right] {$C_1$} coordinate (C1);\n\\draw (D) ++ (0,\\l,0) node [above left] {$D_1$} coordinate (D1);\n\\draw (A1) -- (B1) -- (C1) -- (D1) -- cycle;\n\\draw (A) -- (A1) (B) -- (B1) (C) -- (C1);\n\\draw [dashed] (D) -- (D1);\n\\draw ($(A)!0.5!(A1)$) node [left] {$E$} coordinate (E);\n\\draw ($(C)!0.5!(C1)$) node [right] {$F$} coordinate (F);\n\\draw (E) -- (B) -- (F);\n\\draw [dashed] (E) -- (D1) -- (F);\n\\end{tikzpicture}\n\\end{center}",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "空中课堂必修第三册例题与习题",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030083": {
"id": "030083",
"content": "如图, $AA'$, $BB'$, $CC'$不共面, 且$AA'$, $BB'$, $CC'$三条线段平行且相等. 求证: $\\triangle ABC\\cong \\triangle A'B'C'$.\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0,0) node [above] {$A$} coordinate (A);\n\\draw (-1,-1) node [left] {$B$} coordinate (B);\n\\draw (1,-1.5) node [below] {$C$} coordinate (C);\n\\draw (A) ++ (3,0.3) node [above] {$A'$} coordinate (A1);\n\\draw (B) ++ (3,0.3) node [above left] {$B'$} coordinate (B1);\n\\draw (C) ++ (3,0.3) node [right] {$C'$} coordinate (C1);\n\\draw (B) -- (C) -- (C1) -- (A1) -- (A) -- cycle (A) -- (C);\n\\draw [dashed] (B) -- (B1) -- (C1) (B1) -- (A1);\n\\end{tikzpicture}\n\\end{center}",
"objs": [
"K0605002B",
"K0605004B",
"K0605005B"
],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "人教A版例题与习题",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030084": {
"id": "030084",
"content": "如图, 在四面体$A-BCD$中, $E,F,G$分别为$AB,AC,AD$上的点. 若$EF\\parallel BC$, $FG\\parallel CD$, 则$\\triangle EFG$和$\\triangle BCD$有什么关系? 为什么?\n\\begin{center}\n\\begin{tikzpicture}[>=latex]\n\\draw (0,0) node [above] {$A$} coordinate (A);\n\\draw (-0.5,-1) node [left] {$E$} coordinate (E);\n\\draw (0.5,-1) node [right] {$G$} coordinate (G);\n\\draw (0.2,-1.4) node [below left] {$F$} coordinate (F);\n\\draw ($(A)!2!(E)$) node [left] {$B$} coordinate (B);\n\\draw ($(A)!2!(F)$) node [below] {$C$} coordinate (C);\n\\draw ($(A)!2!(G)$) node [right] {$D$} coordinate (D);\n\\draw (A) -- (B) (A) -- (C) (A) -- (D) (B) -- (C) -- (D) (E) -- (F) -- (G);\n\\draw [dashed] (E) -- (G) (B) -- (D);\n\\end{tikzpicture}\n\\end{center}",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "人教A版例题与习题",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030085": {
"id": "030085",
"content": "复述并证明异面直线判定定理.",
"objs": [
"K0606005B"
],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030086": {
"id": "030086",
"content": "两异面直线所成的角的范围为\\blank{50}.",
"objs": [
"K0607002B"
],
"tags": [],
"genre": "填空题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030087": {
"id": "030087",
"content": "复述``空间直线与平面''一章中的公理1.",
"objs": [
"K0601005B"
],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030088": {
"id": "030088",
"content": "复述``空间直线与平面''一章中的公理2.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030089": {
"id": "030089",
"content": "复述``空间直线与平面''一章中的公理3.",
"objs": [
"K0603001B"
],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030090": {
"id": "030090",
"content": "复述``空间直线与平面''一章中的公理4.",
"objs": [
"K0605001B"
],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030091": {
"id": "030091",
"content": "叙述直线与平面平行的判定定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030092": {
"id": "030092",
"content": "叙述并证明直线与平面平行的性质定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030093": {
"id": "030093",
"content": "叙述直线与平面垂直的判定定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030094": {
"id": "030094",
"content": "叙述并证明直线与平面垂直的性质定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030095": {
"id": "030095",
"content": "叙述平面与平面平行的判定定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030096": {
"id": "030096",
"content": "叙述并证明平面与平面平行的性质定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030097": {
"id": "030097",
"content": "叙述平面与平面垂直的判定定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030098": {
"id": "030098",
"content": "叙述并证明平面与平面垂直的性质定理.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20220930\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": ""
},
"030099": {
"id": "030099",
"content": "回答下列问题, 并说明理由:\\\\\n(1) 垂直于同一直线的两个平面是否平行?\\\\\n(2) 平行于同一平面的两条直线是否平行?\\\\\n(3) 垂直于同一平面的两条直线是否平行?",
"objs": [],
"tags": [
"第六单元"
],
"genre": "解答题",
"ans": "",
"solution": "",
"duration": -1,
"usages": [],
"origin": "二期课改练习册高三-20221002修改",
"edit": [
"20220726\t王伟叶",
"20221002\t王伟叶"
],
"same": [],
"related": [
"009169"
],
"remark": "",
"space": "24ex"
},
"030100": {
"id": "030100",
"content": "已知$\\alpha$, $\\beta$是两个平行平面, 点$P\\in \\alpha$, 直线$l\\subset \\beta$. 证明: 过点$P$所作的$l$的平行线一定在平面$\\alpha$上.",
"objs": [],
"tags": [],
"genre": "解答题",
"ans": "证明略",
"solution": "",
"duration": -1,
"usages": [],
"origin": "自拟题目",
"edit": [
"20221002\t王伟叶"
],
"same": [],
"related": [],
"remark": "",
"space": "12ex"
} }
} }