Section_ⅢLesson 2 & Lesson 3 - Pre­reading

　　When less is more

　　What can you do with① 5 yuan? Not a lot, you may think②. Well, if buying a bag of candies or cookies③ doesn't appeal④ to you, how about⑤ buying a tree instead? Yes, a tree along the banks of the Yellow River to be exact⑥.

　　Every year, approximately⑦ 1.6 billion tons of soil⑧ flows into the Yellow River, China's second longest river. The soil contains⑨ materials to keep the natural balance⑩ of the area. Over time⑪， a lot of soil has been removed⑫， which has caused serious erosion⑬ of the land along the River⑭. In some areas in Shanxi Province, this has destroyed almost all the land, and has forced many local farmers to move to other areas.

　　It is a huge job to control Yellow River erosion. Many people believe this kind of work is best done by government or international organisations. You may agree with⑮ this point of view. If so⑯， it is time for you to think again.

　　①do with处置，对付

　　do with常与疑问词what搭配使用，而deal with则常与how搭配。

　　②Not a lot ...是省略句，补全后为：You cannot do a lot with 5 yuan, you may think.其中you may think为插入语。

　　③cookie/'kʊkI/n.饼干，小点心

　　④appeal/ə'piːl/vi.吸引，引起兴趣；呼吁，恳求

　　appeal to引起......的兴趣；向......呼吁

　　⑤how about ......如何；......怎么样(＝what about)

　　⑥to be exact确切地说

　　⑦approximately/ə'prɒksImItlI/adv.近似地，大约地

　　⑧soil/sɔIl/n.泥土，土壤

⑨contain/kən'teIn/vt.包含，含有