Do you think the situation in the Middle East is under control?"
题目
Do you think the situation in the Middle East is under control?"
a、I think so
b、 I think the same
c、 I think yes
d、 So I think
答案
A
肯定回答：I think so.
否定回答：I think not (=I don't think so.)
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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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