They went to Paris on vacation(对画线部分提问) ____
题目
They went to Paris on vacation(对画线部分提问) ____
答案
如果是对They划线提问,为：Who wento to Paris on vacation?
如果是对to Paris划线提问,为：Where did they go on vacation?
如果是对on vacation划线提问,则为：Why did they go to Paris?
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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