人教版必修4Unit2AnswerkeyforexercisesonPage13,Page49-50的答案

1、Unit 2Working the land Answer key for exercises on Page13 ,Page49 and Page50.1.Helping people in need of help is nice.2.Growing super hybrid rice is not easy.3.Learning more about farming is not difficult.4.Doing research in the countryside is not easy as in the city.5.Getting rid of hunger is very

2、important for some African countries.6.Explaining this again is important or we will confuse the students. Answer key for Exercise 2 on page 13:Discovering useful structures1st group: to do 2nd group: doing 1st group :promise, fail, hope, afford, hope, plan 2nd group: enjoy, finish, mind, miss, keep

3、3rd group: try, stop, begin, forget, like, startAnswer key for Exercise 3 on page 13:1. It was good _ the young man working with his father in the fields.2. Paul clearly enjoyed _ about how to farm well.3. When I talked to him, he told me he dreamed of _ his own farm.4. He will keep _ with scientifi

4、c methods of farming.5. He will keep _ new ideas so he can help farmers around China.Answer key for Exercise 4 on page 13:to seelearninghavingto experimenttrying not6. I am quite interested _ what will happen to Pauls farm in the future.7. Someday, he hopes _ super wheat, like Yuan Longpings super r

5、ice.8. He is not afraid _, because he knows failure will help him learn more,9. He cares very little about _ a big house and a car.10.His father says that he has never regretted _ his son to study abroad.to find outto developto failowingsendingFirst column : circulate circulation confuseconfusiondis

6、coverdiscoveryequipequipmentexpandexpansionproduceproduction Using words and expressionsSecond column :battle battleexportexportfocusfocusregretregretstrugglestrugglesumsumAnswer key for exercise 1 on page 491. The news about Jeffs success quickly _ around the school.2. The _ of his study was on the

7、 _ of Chinese products.3. In an interview, Jeff _ that he had only one _ .4. Before, he often _ to understand the _ world of business.5. He was studying English to _ himself for his new job.circulatedfocusexportcommentedregretstruggledconfusingequipToday we use _ in almost every part of our lives, h

8、oping to make life faster, more convenient or just better. At home we use them to kill flies and other disease- carrying _. Doctors give them to us in medicine to fight harmful _ in our bodies. Factory workers use them in industrial _ to make everything from toys to shoes to toothbrushes. Farmers al

9、so use them in the _ to help their plants grow fast and become strong. chemicalspetsbacteriaproductionsoilAnswer key for exercise 2 on page 49However, the _ of new ways to use _ have brought difficulties as well as benefits. For example, too much use in farming leads to food that is low in _ and oth

10、er things that we need for good _. What is the _ of the problem? Some people think it is from a wrong _ on money and speed, while others say it is just from a lack of education about the problems. Who knows? Maybe it is both.discoverieschemicalsmineralsfocusrootnutrition1.今天的课主要讲如何写新闻总结。今天的课主要讲如何写新闻

11、总结。(focus on ; summary )2.我们必须快速浏览这个报告我们必须快速浏览这个报告, 找到它的主要内找到它的主要内容容 (skim)Todays lesson focus on how to write a summary of a new article.we must skim the report to find the main idea.Answer key for exercise 3 on page 493.老师让我们将难懂的单词划线并查字典老师让我们将难懂的单词划线并查字典（找出其意思）。（找出其意思）。(underline)4.他说像统计数据这样的细节就不必

12、包括在他说像统计数据这样的细节就不必包括在内了。内了。(statistics; details )The teacher told us to underline the difficult words and look them up in the dictionary.He said that details like statistics should not be included. 5.我想我将用到一篇关于农民们让自己的土地远离我想我将用到一篇关于农民们让自己的土地远离化肥的报告。化肥的报告。(keepfree of ; chemical fertilizers)6.这个农民花了这个

13、农民花了20年的时间来创建自己的企业。年的时间来创建自己的企业。(build up )7.使用过多的化肥导致了严重的问题。使用过多的化肥导致了严重的问题。(lead to )I think Im going to use a reporter about how farmers are keeping their fields free of chemical fertilizers.It took the farmer twenty years to build up his business .Using too much chemical fertilizer will lead to ser