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\usepackage{longtable}
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\newtheorem{eg}{例~}
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\newtheorem{rem}{注~}
\newtheorem{thm}{定理~}
\newtheorem{coro}{推论~}
\newtheorem{axiom}{公理~}
\newtheorem{prop}{性质~}
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A.~#1\\
B.~#2\\
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A.~#1 &B.~#2& C.~#3& D.~#4
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(1)~#1 &(2)~#2& (3)~#3& (4)~#4
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\begin{document}

\begin{longtable}{|p{.15\linewidth}|p{.15\linewidth}|p{.65\linewidth}|}
\hline
课时目标 & 对应单元目标 & 目标内容 \\ \hline
课时目标待替换 
    & & \\ \hline
\end{longtable}

\newpage

\begin{longtable}{|p{.15\linewidth}|p{.75\linewidth}|}
\hline
单元目标 & 目标内容 \\ \hline
单元目标待替换
    & \\ \hline
\end{longtable}

\end{document}