when I called you yesterday there was no answer to me .----?
题目
when I called you yesterday there was no answer to me .----?
A where did you go B where were you 选B A为什么错
答案
where did you go?表示具体动作,意思是“你去过哪里?”强调“去”的具体动作；
where were you?表示状态,意思是“你在哪里?”强调“在哪里”,一种状态.
根据问题“昨天我打你电话的时候,没人接,你人在哪里?”所以不能说“你去过哪里”.故不能选A.
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．
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