His writing is so confusing that it is diffi
题目
His writing is so confusing that it is diffi
答案
His writing is so confusing that it is difficult to understand.他的作品是那样的混杂不清以致于很难理解.
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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