几道英语改同义句题目
题目
几道英语改同义句题目
His father and mother were both doctors.同义句
____ his father ______ mother were doctors.
Why do you want to become a dustman?同义句
Why do you want to ______ a dustman?
答案
Both and
be
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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