1.____a reply,he decided to write again.
题目
1.____a reply,he decided to write again.
选项 A.Not receiving B.Receiving not C.Not having received D.Having not received 若选C表示在decided之前行不行?
答案
c
举一反三
已知函数f(x)=x,g(x)=alnx,a∈R.若曲线y=f(x)与曲线y=g(x)相交,且在交点处有相同的切线,求a的值和该切线方程.
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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