12. 环境保护与经济效益那篇 有一题说 David Parce? 这个人会认为 下边那个是Monetition(<---不知道拼的对不对)的现象 忘了选哪个了..
逻辑全中, 有个别变体. 春哥版很全了.
sc 想不起来了,想起来在补吧
数学啊数学....
1. x+y>0吗? 开始失忆.....
2. 1/3piano, 1/6 guitar, 1/8 violin那个
3. 有一个数列是由 30,50,70组成的. mean is less than 50, number of 30s and 50s are the same. the number of 30s is at least what fraction of the total numbers. 我猜的... 3/8? 还是 3/10不确定..
argument recently, The Local clothing stores has decreased in profits, from July 1 to September 31. However, there is increase in sales of home furnish products. clearly, it is better for us to decrease the section of clothing in our department store and increase home furnish products. for sure we will make greater profits.
issue. many people complaint that we depend on computer to much, as a matter of fact, today, computers helps us in so many ways.