露营的好处,英语作文 求一篇
题目
露营的好处,英语作文 求一篇
答案
Camping is an entertaining activity and very favorite among families ,youngsters and couples all over the world .The campers leave their homeregion and enjoy nature while spending one or several days ...
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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