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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