人教版(新教材)高中英语选修1Unit5 Working the Land课时作业3：Grammar-主语从句

1、Grammar主语从句I .阅读理解ABig changes in agriculture are taking place in Singapore.The small, Southeast Asian nation is leading a farming revolution, according to the Reuters news agency.Singapore covers around 720 square kilometers of land and only one percent of that land area is used fbr agriculture.Foo

2、d production costs are higher there than the rest of Southeast Asia.As climate change and population growth threaten food supplies, the pressure on new fanners is to answer the governments call to “grow more with less”.Whenever I talk about food security in Singapore, I tell people not to think abou

3、t land-think about space, because you can go upwards and sideways, ” said Paul Teng, an agriculture professor at Nanyang Technological University.There are more than 30 vertical （垂直的）farms in Singaporeones that grow up, not across, the land.Sustenir Agriculture is one of these businesses.Its hydropo

4、nic （无土 栽培的）fann grows non -native foods like cherry tomatoes and strawberries inside buildings under artificial lighting.Then it sells the produce to local supermarkets and online stores.Sustenir raised $ 16 million from investors （投资者）last year.The money will be used to expand operations in Singap

5、ore.However, not everyone thinks the new technology is best.Egg farmer William Ho says the government should not depend so much on agriculture technology businesses. Many of them have failed.That why Im always asking the government why it doesnt invest in us old-timers.Wc arc more practical, “ he sa

6、id.Professor Paul Teng said an issue fbr urban fanners is that the high cost of the technology makes their products too pricey fbr many people.K语篇解读本文是一篇新闻报道，主要介绍了新加坡建设空中农场以解决国内食品供应短缺问题的情况。What does the second paragraph mainly discuss?High food production costs.Reasons for changes in agriculture.Agr

7、icultural technology businesses.Sale expansion of food markets.K答案B K段落大意题。根据第二段内容可知，新加坡用于农业的耕地面 积少、食品生产本钱高，而气候变化和人口增长对其粮食供应构成了威胁，再结 合上文中的“Big changes in agriculture are taking place in Singapore可知，本段主 要解释了新加坡农业发生变革的原因，应选B。Which is the way to achieve food security according to Paul Teng?Exploring mo

8、re space.Buying more food.Enlarging farmland.Investing more money.K答案X A K推理判断题。根据第三段中的“Whenever I talk about food security in Singapore, I tell people not to think about land-think about space, because you can go upwards and sideways ”可知，Paul Teng认为实现粮食保障的途径是向 上或向侧面开发空间，故A项符合文意。What do we know abou

9、t the old - timers?They work on high-tech farms.They benefit from pricey products.They reduce production costs.They need the governments support.K答案H D K推理判断题。根据最后一段中的“Im always asking the government why it doesnt invest in us oldtimers v 可知,禽蛋养殖户 William Ho 问政府为什么不在他们这些传统农户身上投资，言外之意是他们这些传统农户需 要政府的支

10、持，应选D。Where is this passage probably taken from?A. A guidebook.B. A brochure.C. A newspaper.D. A journal.K答案Hc K推理判断题。通读全文可知，本文主要报道了新加坡建设空中 农场以解决国内食品供应短缺问题的事情，属于新闻范畴，因此文章最有可能出 自报纸，应选CDBA new study shows that rising levels of planetwarming gases may reduce important nutrients （营养物）in food crops.Resea

11、rchers studied the effects of carbon dioxide on rice.In the experiment, scientists grew 18 kinds of rice in fields in China and Japan.They set carbon dioxide levels to what scientists are predicting fbr our planet by the end of the century.Rice grown under high carbon dioxide conditions had, on aver

12、age, 13 to 30 percent lower levels of four B vitamins and 10 percent less protein （蛋白质）.The crops also had 8 percent less iron and 5 percent less zinc than rice grown under normal conditions.However, vitamin E levels increased by about 13 percent on average.The researchers said the effects of planet

13、-warming gases would be most severe fbr the poorest citizens in some of the least developed countries.These people generally eat the most rice and have the least complex diets.That includes about 600 million people in Indonesia, Cambodia, Myanmar, Bangladesh, Laos and other nations, mainly in Southe

14、ast Asia.Other studies have shown that higher temperatures from climate change and weather extremes will reduce food production.And scientists are finding that rising levels of carbon dioxide and other planet-warming gases threaten food quality.Earlier studies showed that wheat, rice, field peas and

15、 soybeans grown under high carbon dioxide conditions all had lower levels of protein and minerals.Scientists predicted that almost 150 million people might be at risk of having too little protein or zinc in their diet by 2050.The new study suggests a way to lower the nutritional harm of climate chan

16、gc.That is to grow different forms of rice that can adapt to higher carbon dioxide levels.R语篇解读 本文介绍了温室气体如何减少粮食作物中的营养物质以及降低气 候变化对营养物的损害的方法。Growing rice under high carbon dioxide conditions may.A. increase iron in the ricemake it less nutritiouscause losses of vitamin Emake it more deliciousK答 案X B K

17、细节理解题。根据第二段中的Rice grown under high carbon dioxide conditions had, on average, 13 to 30 percent lower levels.less protein（蛋 白 质）”可知，B项为正确K答案比 A、C、D三项的表述均与原文表述不符。 6. How can people reduce the nutritional harm of climate change?By importing rice from China and Japan.By taking other kinds of food instea

18、d of rice.By avoiding eating rice from Southeast Asia.By growing rice suitable for the environment.K答 案X D K细节理解题。根据文章最后一句That is to grow different forms of rice that can adapt to higher carbon dioxide levels”可知，D 项为正确 K 答 案X 7. Whats the authors purpose of writing the text?To infbnn readers what nu

19、trients food crops contain.To call on people to care fbr the planet they live on.To share the results of some studies on peoples diets.To tell readers where food crops are mainly produced.K答案X B K写作意图题。通读全文可知，本文通过介绍温室气体增加对粮 食作物的影响来唤起人们对人类赖以生存的地球家园的保护。选Bo3CAbout two hours from Egypts capital, Cairo l

20、ies Scrapium Foresta 240hectare forest of both native and nonnative trees in the middle of the desert.While forests have been used to stop the spread of deserts fbr a very long time, the absence of rainfall makes nurturing the trees and keeping them healthy an almost impossible task in most African

21、countries.But it turns out we dont have to rely on water foiling from the sky, as waste water works even better fbr plants and trees not intended fbr human consumption.Serapium Forest is a research project between Egyptian and German scientists that started during the 1990s.They knew Egypt had impor

22、tant advantages over European countries, like the absence of severe winters.So if trees had enough water, they would grow well even in a hard desert environment.But compared with countries like Germany, Egypt has very little rainfall, so researchers had to come up with a solution to provide the tree

23、s with the necessary nutrients.They found the perfect answer to their problem at a nearby treatment plant.Researchers found that thanks to the sunlight and the nutrients in the water, trees in Serapium Forest grow four times faster than they do in Germany.In only 15 years, the valuable trees are rea

24、dy fbr hanesting.The same amount would take 60 years to harvest in Germany.That is actually one of the particularities of Serapium Forestnot only is it helping the country regain desert land, but its also providing a valuable economic resource that Egypt would have otherwise had to import, while pro

25、viding many needed jobs.Although 240 hectares of lush forest reclaimed from the desert may not seem very much, compared with the rate at which deserts are advancing across Africa, the phenomenon Serapium Forest serves as an example of what can be achieved through human intelligence.K语篇解读 本文是一篇说明文。讲述

26、科学家在埃及植树造林，在沙漠中利用 废水灌溉树木，从而取得治沙的成功。What can we infer about Serapium Forest?It was planted 60 years ago.It lived through severe winters.It grew well without being watered.It might offer people many job opportunities.K答 案X D K细节理解题。根据第五段末句可知，SerapiumForest会给人们 提供一些就业机会。故正确K答案为D。What difficulty should

27、be overcome to plant trees in African countries?A. Natural fires.B. Lack of rainfall.C. Pestsbites.D. Humans cutting.K答案B K细节理解题。根据第二段首句以及全文内容可知，在非洲国家 种植树木的困难是水的短缺。故正确K答案H为BDWhat advantage docs Egypt have over Germany in planting trees?It has rich soil.It has warm climate.It has advanced technique.I

28、t has enough rainfall.K答案B K细节理解题。根据第三段第二句可知，埃及的气候适宜树木生 长，没有欧洲国家的寒冬。故正确K答案为Bo3What is the passage mainly about?The benefits of planting trees.The difficulty with planting trees.The achievement in controlling deserts advancing.The way of turning waste water into drinking water.K答案H c K主旨大意题。文章主要介绍了在沙

29、漠中利用废水灌溉树木，从 而取得治沙的成功。故正确K答案为C n.七选五Correct planting methods can help a tree grow healthily, j One of them is choosing an improper planting place, which may be harmfi.il to the tree.Some soils arent good fbr planting some trees.2 Itll help you detennine the kind of fertilizers （月巴料） necessary fbr th

30、e tree.Digging a hole too deep or too narrow is also a mistake we tend to make while planting a tree. If the hole is dug too deep, the roots dont get enough oxygen, resulting in bad growth of the tree.Besides, a narrow hole wont allow the roots to expand or support the tree firmly. 3 Ideally, the planting hole fbr a tree should be twice as wide and deep as the root ball.To protect the roots of a tree, we need to put a mulch（护根）on them.First of all, its really important to select the right type of mulch.4 In addition, we must use a proper amount of