there are many kinds of tigers all over zhe world 完形填空
题目
there are many kinds of tigers all over zhe world 完形填空
答案
Therearemanykindsoftigersallover the world, and the 36 tiger is the Northeast Tiger. Most of them live in the 37 of China, like Heilong jiang Province and Jilin Province. Because therearemany 38 ...
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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