翻译People move up and down the canals in boats to go shopping or visit their friends.
题目
翻译People move up and down the canals in boats to go shopping or visit their friends.
答案
人们搭乘轮船沿在运河上往来,或是去购物,或是去探访朋友.
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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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