求初二上册英语单词
题目
求初二上册英语单词
全书的~
答案
Unit1In ten years,Bob will be a pilot.He'll live in Beijing.He think it's really a beautiful city.As a pilot,he will travel all over the world.So he'll meet lots of interesting people and visit lots o...
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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