英语翻译
题目
英语翻译
在打电话,我的哥哥在房间里看书,我在做作业.
答案
It is seven o'clock in the evening now.My grandfather and my father are playing chess.My mother is watching TV.My mother is listening to the radio.My sister is making a phone call.My brother is reading a book in the room.and i am doing my homework.
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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