求文档:英语阅读理解七年级上册(湘教版)
题目
求文档:英语阅读理解七年级上册(湘教版)
答案
Mr. Smith is a big man. He is very heavy. His old clothes are too small. He wants(想要) to buy new shirts and pants that are very big. The pants must(必须) be very long. He does not want to buy sh...
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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