翻译Mr Zhang taught him history when he was bvery young .Nobody taught him.
题目
翻译Mr Zhang taught him history when he was bvery young .Nobody taught him.
答案
张先生在很年轻的时候就教他历史了.没有人教他.
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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