This question is hard to _ a.be answered b.answer
题目
This question is hard to _ a.be answered b.answer
This question is hard to _ a.be answered b.answer
答案
B
注意,此句型中的主语是句尾不定式的【逻辑宾语】,所以不可以选择不定式的被动式
再如：
The are easy to get along with.
The sentence is difficult to translate.
The apple is good to eat.
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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