it is said that --- a new novel.
题目
it is said that --- a new novel.
A.that he has been written
B.that he has written
为什么不是B呢?it is said that 有什么要求和用法么?
答案
应该选B
A是被动语态,不正确.
It is waid that 据说,后面跟从句.
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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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