Liu Wei was born in Beijing,is a waist of young people.11 years old,due to an accident Liu unfort
题目
Liu Wei was born in Beijing,is a waist of young people.11 years old,due to an accident Liu unfort
答案
我想 刚看到这个句子的人应该跟我一样,觉得这个句子问题很多.如果你要问什么问题的话,最好把英文写全了~
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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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