shenzhen is a very____city.it has a lot of tall____.there are many ____living in winter.most of them
题目
shenzhen is a very____city.it has a lot of tall____.there are many ____living in winter.most of them are busy.the wather here is not very_____in winter.it never Snows,but it is_____in summer.we can go to the beach and_____in the see.
答案
beautiful buildings people cold hot swimming
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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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