中西方文化差异的英文作文要时长3分钟的
题目
中西方文化差异的英文作文要时长3分钟的
答案
People in different parts of the world dress differently,such as the dressing between the east and west in the past.But such differences are no longer significant between china and the west.Nowadays o...
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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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