How often do you go to a concert ------ever.I am not interested in that at all.
题目
How often do you go to a concert ------ever.I am not interested in that at all.
A.usually B.hardly C.almost D.never 请问应该选择哪一个?麻烦讲一下为什么?我觉得BD都对啊!
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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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