“Did you water the trees?”his wife said to him.(改为同义句)怎么改?
题目
“Did you water the trees?”his wife said to him.(改为同义句)怎么改?
答案
His wife asked him if he had watered the trees.
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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