Sally was in high school five years ago.就画线部分提问 ___________
题目
Sally was in high school five years ago.就画线部分提问 ___________
答案
如果对five years ago划线提问,为：When was Sally in high school?如果对in high school划线提问,为：Where was Sally five years ago?如果对Sally划线提问,则为：Who was in high school five years ago?估计是第...
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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