英语翻译
题目
英语翻译
Some people are against the idea of building more bikes lanes because they are expensive.But roads for cars are even more expersive than bike lanes because cars wear rosds out faster than bikes .If we had more bikes lanes,perhaps fewer people would drive cars.This would make the cost of building and taking care of all the roads much less in the long run
答案
因为成本太高,有些人反对建更多的自行车道.可是机动车道比自行车道更贵,因为机动车道会比自行车道更快被使用坏.倘若我们多建自行车道,开车出行的人就会减少.而从长远角度上讲,这一做法会使修建和保养道路更省钱
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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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