Who designed this kind of computer?同义句转换
题目
Who designed this kind of computer?同义句转换
Who _____ this kind of computer _______ _______?
答案
Who designed this kind of computer?
= Who (was) this kind of computer (designed by)?
注：换成被动语态即可.
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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