仁爱英语八年级上册Rainforest课文
题目
仁爱英语八年级上册Rainforest课文
答案
Rainforrsts cover 6% of the earth's surface.Thousands and thousands of animals live in rainforests.Many of them live in the trees over 30 meters from the ground.There are lots of tall trees and thousa...
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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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