用onto off above below behind 造句,
题目
用onto off above below behind 造句,
答案
he threw it onto the roof
take off the clothes
the photo above is mine
the river is below the bridge
the book is behind you
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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