以a letter to a class 为题写给同学一封信
题目
以a letter to a class 为题写给同学一封信
120个词就可以了,
答案
照着这个改改吧实在是没有时间TO YOU, SIR—and to your colleagues in the Class of 1960—greetings. You are about to embark upon an experience that will be different from any you have ever had before. Yo...
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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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