求一份演讲稿(小学版),life is ……
题目
求一份演讲稿(小学版),life is ……
答案
Life Is a BookLife is like a book,sometimes the story goes just like what you thought,sometimes it's not.You can find happiness,sadness in this book,some people are nice,some are curel.The more you re...
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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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