He works hard to make more money because he has a large family to s____.
题目
He works hard to make more money because he has a large family to s____.
There are many s______of books to choose from in the libray.You can enjoy them.
答案
正确答案为:
1 support 养家糊口
2 sorts 种类
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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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