2个英语选择题......
题目
2个英语选择题......
_________ is difficult if you put all your heart into it.
A everything
B anything
C nothing
D something
I can't decide _____.Which do you think is better?
A to buy which one
B to buy which
C which one to buy
D which to buy one
答案
C 没有任何事情
A to 在动词之后
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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