He did not thank me for the gift.That is ____ annoyed me.
题目
He did not thank me for the gift.That is ____ annoyed me.
A.which B.what C.whatever D.the thing what
答案
选 B
这是一个表语从句,what在从句中充当主语.
假如用D的话,what必须改成that
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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