新概念英语2第50,51课摘要写作答案
题目
新概念英语2第50,51课摘要写作答案
答案
the write going to woodford green,but he didn't know where it is.the conductor will tell he where to get off.they arrive at the bus ,when the writer ask“it this woodford green?”the conductor realize...
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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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