英语作文100词,关于过去现在人们的生活方式,等
题目
英语作文100词,关于过去现在人们的生活方式,等
答案
Changes in people's life
Great changes have taken piace in people's life in past 20 years.
In the past ,people kept in touch with relatives or friends mainly bu sending letters .They would listen to the radio for news and other programmes on TV.
Some families are rich enough to send their chilren to school in their own cars.More and more peoplelive in big and bright aprtments with several rooms.
In a word ,people live better than before .
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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