用always、sometimes、rarely、frequently、ever造句
题目
用always、sometimes、rarely、frequently、ever造句
每样一个,最好再造两个感叹句.
答案
He always plays basketball after class.Sometimes she reads romance novels at home.They rarely studied hard before middle shool.Li Ming goes to the library frequently on Saturday.Do you ever make fun o...
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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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