We are going to ( ) some pictures on the wall.
题目
We are going to ( ) some pictures on the wall.
put on put down put out put up
答案
We are going to ( ) some pictures on the wall.
选 put up意思是“挂起/张贴”.
而put on“穿上”,put down“写下/记下”,put out“扑灭/伸出”.
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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