35.We visited him ____ when he was in hospital.
题目
35.We visited him ____ when he was in hospital.
A.every other days B.each other day C.every other day D.every two day 这道题答案是C但是为什么不能选B
答案
C.every other day 是固定用法,意思是每隔一天.
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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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