A fox is looking for food.He is very hungry .He looks up and sees a lot of fine grapes at the @
题目
A fox is looking for food.He is very hungry .He looks up and sees a lot of fine grapes at the @
接@ top of the wall ."How nice they are I want to eat them." The fox jumps and jumps,but the wall is too high .He can't get the grapes .So the fox goes away and says," I don't like those grapes .They are not good to eat at all."
答案
一只狐狸正在寻找食物,他非常饥饿.他抬头看到墙头上有好多好吃的葡萄.狐狸说:''多好的 葡萄啊!我想吃他们"狐狸跳了又跳,但是墙太高,他够不着葡萄.后来狐狸走了.边走边说:“我不喜欢葡萄,他们一点也不好吃.”
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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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