造句子 英语
题目
造句子 英语
造8个一般过去时句子,用以下动词,要有时间状语.buy visit be call run ride feel leave
答案
I bought a car yesterday.I visited my grandmother last week.I was a school boy last yearI called my teacher last night.I ran to the bookstore yesterdayI rode my bick to school this morningI felt bette...
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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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