Look!There are two windows ______the wall and there is a map ____one of the windows.
题目
Look!There are two windows ______the wall and there is a map ____one of the windows.
Look!There are two windows ______the wall and there is a map ____one of the windows
我主要是弄不清on the wall 和in the wall的区别,窗户在墙上用on 还是in?
答案
in...on
窗户在墙之间用in,地图在窗户平面上用 on
举一反三
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．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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