mary plays volleyball every day
题目
mary plays volleyball every day
对括号部分提问
mary plays (volleyball) every day
they are talking about (a new film)
my sister is (1.68 metres) tallS
the girl (in green)won the game
答案
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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