求高手写一篇《Take the care of the earth we live on》
题目
求高手写一篇《Take the care of the earth we live on》
答案
How to take good care of our earth has become one of the biggest problems in the world .It's our duty to protect our environment .No matter where we live ,we should do something to make our earth a be...
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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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