仁爱英语八年级上册22页3的英语作文怎么写
题目
仁爱英语八年级上册22页3的英语作文怎么写
rt
答案
The 29th Olympics has been over,the Bejing is more beautiful now.Look,there are more trees and grass,the air is more fresh;there are more visitors from other countries come to vsit Beijing;the people in Beijing are improve our environment and they are doing more execrises to keep thmselves fit.How do you think about Beijing?It is beautiful now,isn't it?
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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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