There is ___ lake at ___foot of __hill.By ___lake stand many apple trees用a,an,the填
题目
There is ___ lake at ___foot of __hill.By ___lake stand many apple trees用a,an,the填
________doctor has been working for five hours without the ____rest
答案
There is _a__ lake at _the__foot of _the_hill.By _the__lake stand many apple trees用a,an,the填
___The_____doctor has been working for five hours without _a___rest
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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