there is a lot of rain in the south of china in summer
题目
there is a lot of rain in the south of china in summer
There is a lot of rain in the south of china in summer
it often__ __in the south of china in summer
the rain is often__in the south of china in summer
答案
是改同义句吧,我的绝对正确
rains much
heavy
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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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