看图英语作文!
题目
看图英语作文!
有人做卫生,有人看书,有人画画,30个词
对啦,还有个小男孩给一个小女孩讲课!
答案
While class is over,someone are doing some cleaning;someone are reading books and others are drawing .Look,a boy is giving lectures to a girl.Every one is doing what he should do.
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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