what did you do on your last day off?we ____adoiphin show.A watched B saw c looked at
题目
what did you do on your last day off?we ____adoiphin show.A watched B saw c looked at
答案
A
你上次假期做了什么?我们看了一场海豚表演.
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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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