the industries dump these materials into the nearby rivers____ wash them into the sea
题目
the industries dump these materials into the nearby rivers____ wash them into the sea
the industries dump these materials into the nearby rivers,____ wash them into the sea.
a.which b.that c.when d.where
答案
a
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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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