1.Please be quiet.the kids have (fall)asleep.2.Thd dirty water in this river ma...
题目
1.Please be quiet.the kids have (fall)asleep.2.Thd dirty water in this river ma...
1.Please be quiet.the kids have (fall)asleep.
2.Thd dirty water in this river many problems in the past five years.a.creates b.is creating c.has created d.was creating
答案
fallen; C
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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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