英语作文 英语作文 my views on joining societies on campus
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英语作文 英语作文 my views on joining societies on campus
答案
Some people say that campus life dull,but I think that campus life is colorful.Class,we discussed intense,mutual express their views.I once to a problem and students of the quarrel,we all disagree,we ...
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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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