初中英语单选题300道!
题目
初中英语单选题300道!
答案
（一）1. What do you think ______solve the problem ? A.you can do B.can you do C.you can do to D.can you do to2 In the past he often made his sister___, but now he is often made __by his s...
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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