What does this sign mean?要以Keep off the grass 写三个答句
题目
What does this sign mean?要以Keep off the grass 写三个答句
我写了两个答句，一个是It means keep off the grass。一个是It means you shouldn't walk on the grass。仿照这两个答句答
答案
1、Don't tread on the grass
2、Please protect the grass
3、Don't trample on the grass
4、hold off the bush
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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