用英语写一篇关于网上购物优点的短文到校报英语角投稿
题目
用英语写一篇关于网上购物优点的短文到校报英语角投稿
答案
In current society, shopping on the Interent is becoming more and more popular. It has many advantages and disadvartages: shopping on the Internet is convient and faster for customers. They can stay at home looking for the items, they need or like through the Internet which supplies a variety of products. People needn't to go shopping in stores. Then it can reduce cars' amount on the road. So it also can reduce pollution of the gas. It's unpollution and reduce energy. I suggest shopping on the Internet .
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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