You are supposed____your shoes when you entre the house.
题目
You are supposed____your shoes when you entre the house.
A.taking off B.to take off C.being taken off D.to be taken off
答案
suppose to be
D.supposed to be taken off 应该脱鞋在进屋子前
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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