31.The supermarket sells various kinds of things, (从衣物食品到电脑游戏) 32.The new type of machine has been put in service, (让我们年底完成工程成为可能)
7 r5 p4 w7 h9 A5 @; A33. It is true that humans have an extraordinary genius for working wonders, but (污染仍是当前及未来最严重的问题之一)
6 M& c( T' C* N. A34. It is true that the world faces problems of pollution, but (这个问题可以通过全球的努力加以控制)
4 G5 |) t' k: t4 `1 {9 F- j+ H35.(在任何一个存在种族歧视的社会里), there will always be tension.36.Some people say that in the next 30 years the population of Antarctica will grow steadily, (印度也同样)& e& o4 N& M! L/ @# l; {
37. Someday, perhaps, (科学家能够准确地预报地震)" w) A; |: ^/ a( [' v7 j! h
38.(整夜他清醒地躺在床上)worrying about his financial problems.39.It is widely accepted that (社会的整个结构都依赖于相互信任)/ B& Q+ O7 m0 g
40. By six thirty every morning, (操场上满是晨练的学生) |