diff --git a/题库0.3/BasicKnowledge.json b/题库0.3/BasicKnowledge.json
index 866f7052..076cf960 100644
--- a/题库0.3/BasicKnowledge.json
+++ b/题库0.3/BasicKnowledge.json
@@ -909,7 +909,7 @@
             "K0201004B",
             "K0202003B"
         ],
-        "content": "有理数指数幂:\\\\\n(1) 指数为零: $a^0=$\\blank{50}($a \\neq 0$);\\\\\n(2) 指数为负整数: $a^{-n}=$\\blank{50}($a \\neq 0$, $n$ 是正整数);\\\\\n(3) 指数为正分数: $a^{\\frac{m}{n}}=$\\blank{50}($a \\geq 0$, $m, n$是正整数, $n \\geq 2$, $(m, n)=1$);\\\\\n(4) 指数为负分数: $a^{-\\frac{m}{n}}=$\\blank{50}($a \\neq 0$, $m, n$是正整数, $n \\geq 2$, $(m, n)=1$)."
+        "content": "有理数指数幂:\\\\\n(1) 指数为零: $a^0=$\\blank{50}($a \\neq 0$);\\\\\n(2) 指数为负整数: $a^{-n}=$\\blank{50}($a \\neq 0$, $n$ 是正整数);\\\\\n(3) 指数为正分数: $a^{\\frac{m}{n}}=$\\blank{50}($m, n$是正整数, $n \\geq 2$, $a$使得该表达式有意义);\\\\\n(4) 指数为负分数: $a^{-\\frac{m}{n}}=$\\blank{50}($m, n$是正整数, $n \\geq 2$, $a$使得该表达式有意义)."
     },
     "B00128": {
         "lesson": "K0203",
@@ -917,7 +917,7 @@
             "K0203001B",
             "K0203002B"
         ],
-        "content": "实数指数幂的性质(已知$a$\\blank{20}, $s,t\\in \\mathbf{R}$):\\\\\n(1) $a^s a^t=$\\blank{50};\\\\\n(2) $(a^s)^t=$\\blank{50};\\\\\n(3) $(ab)^t=$\\blank{50}."
+        "content": "实数指数幂的性质(已知$a,b$\\blank{20}, $s,t\\in \\mathbf{R}$):\\\\\n(1) $a^s a^t=$\\blank{50};\\\\\n(2) $(a^s)^t=$\\blank{50};\\\\\n(3) $(ab)^t=$\\blank{50}."
     },
     "B00129": {
         "lesson": "K0203",