if you fail to plan you plan to fail 谁说的啊
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if you fail to plan you plan to fail 谁说的啊
答案
The saying has been attributed most often to Ben Franklin,who is also credited with having said,"By failing to prepare,you are preparing to fail.” More recent variations,along with their attributions...
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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