高中英语人教版选修6课时跟踪检测(四)

Unit 4 第4课时Ⅰ.单项填空从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

1．________all my fellow students from China, I wish to say a word of hearty thanks to Mr. Brown.A．On Behalf ofB．In exchange forC．In return forD．In spite of答案：A本题题意：我谨代表所有来自中国的同学，对布朗先生表示诚挚的感谢。

on behalf of 表示“代表(或代替)某人”。

2．It________be quite windy there, especially in spring.A．must B．canC．mustn't D．might答案：B本题题意：那里有时容易刮风，特别在春季。

can表示常有的行为或情形，译作“有时会；时而可能”。

3．After a long argument, we decided________for our holiday.A．where to go B．where to be goneC．in which to go D．in which to be going答案：A本题题意：经过长久的争论，我们把休假的地方决定下来了。

本题考查“疑问词＋不定式”结构的用法。

4．These cool colors have the________to relax, refresh and comfort us.A．energy B．strengthC．power D．force答案：C本题题意：这些冷色调能让我们精神放松，恢复活力，感到舒适。

power表示“某种能力”。

5．Suppose what Mr. O'Keefe likes or doesn't is going to make a/an________to people keeping their jobs around here.A．situation B．differenceC．variety D．impact答案：B本题题意：我想奥基夫先生喜欢什么，不喜欢什么，对今后在这儿工作下去的人来说关系重大哩。

Unit 4 Global warmingI. 完形填空阅读下面短文，掌握其大意，然后从各小题所给的四个选项(A、B、C和D) 中，选出最佳选项。

Today the scientific community is in almost total agreement that the earth’s climate is changing and that this represents a huge threat to the planet and to us. According to a survey, with only 69% accepting the earth is warming— only 1/4 Americans see global warming as a major threat, public opinion 1 the scientific conclusion.Climate scientists and campaigners have long debated how to better communicate the message to nonexperts so that climate science can be 2 into action. According to Christopher Rapley, the usual tactic(策略) of climate experts to provide the public wit h information isn’t 3 because ＂it does not address key potential causes.＂We are all exposed to the evidence of climate change on an almost a daily basis. The information is almost 4 .Then what’s wrong? 5 our brains.Daniel Gilbert mentioned our brains’ failure to accurately notice gradual change. Robert Gifford also __6__ the point about our brains’difficulty in grasping climate change because of limited cognition and social __7__ with other people (＂Why should we change if X won’t?＂) .＂A more powerful barrier is the 8 of perceived(感知的) be havioral control; ‘I’ m only one person; what can I do ?’ is certainly a big one.＂For many, the first challenge will be inrecognizing barriers 9 they can overcome them.But for those of us who understand that climate change is a problem yet make little effort to cut the number of overseas trips we make or the amount of meat we consume, neither the uncaring attitude nor denial really explains the 10 between our actions and beliefs. Lertzman has come to the conclusion that the conflict between __11 _ both the planet and our way of life is too painful to bear. ＂When we don’t 12 the pain of that, that’s when we get 13 and can’t move forward.＂Lertzman refers to this 14 as ＂environmental melancholia(忧郁症),＂and points out that there’s a lot to be said for providing a means 15 acceptable to talk about.＂Rosemary Randall suggests that climate change is such a(n) 16 subject that it ＂can raise fears and anxieties that people feel have no 17 in polite conversation.＂Lertzman says the community has been slow to realize the value of psychology. Gifford says otherwise, __18__ —＂climate change, and not mental health, is the biggest psychological problem＂.Despite the pain, shame, difficulty in fully addressing climate change, both Lertzman and Gifford are still __19__ about our ability to face up to the challenge. ＂There can’t be anything about the human mind that stops us struggling with these issues given that so many people 20 are —maybe that’s what we should be focusing on instead.＂says Lertzman.1. A. accounts for B. falls behind C. wishes forD. leaves behind2. A. translated B. sprung C. forcedD. sent3. A. revolutionary B. detailed C. popularD. enough4. A. unreliable B. unbearable C. unacceptableD. unavoidable5. A. Submit B. Control C. BlameD. Curse6. A. picks up on B. gets down to C. throws back onD. looks up to7. A. connections B. comparisons C. competenceD. development8. A. sense B. problem C. lack D. effect9. A. if B. though C. beforeD. since10. A. relationship B. disagreement C. gapD. balance11. A. caring about B. taking on C. fighting againstD. putting away12. A. feel B. process C. remember D. hide13. A. hit B. puzzled C. stuckD. stressed14. A. conflict B. event C. hesitationD. inability15. A. socially B. environmentally C. culturallyD. morally16. A. complex B. controversial C. awkwardD. disturbing17. A. idea B. goal C. placeD. choice18. A. somehow B. however C. thereforeD. either19. A. optimistic B. concerned C. cheerfulD. encouraged20. A. equally B. still C. especiallyD. alreadyII. 阅读理解A（2021·新课标全国卷Ⅰ）A build-it-yourself solar still（蒸馏器） is one of the best ways to obtain drinking water in areas where the liquid is not readily available. Developed by two doctors in the U.S. Department of Agriculture, it’s an excellent water collector. Unfortunately, you must carry the necessary equipment with you, since it’s all but impossible to find natural substitutes. The only components required, though, are a 5＇ 5＇ sheet of clear or slightly milky plastic, six feet of plastic tube, and a container — perhaps just a drinking cup — to catch the water. These pieces can be folded into a neat little pack and fastened on your belt.To construct a working still, use a sharp stick or rock to dig a hole four feet across and three feet deep. Try to make the hole in a damp area to increase the water catcher’s productivity. Place your cup in the deepest part of the hole. Then lay the tube in place so that one end rests all the way in the cup and the rest of the line runs up — and out — the side of the hole.Next, cover the hole with the plastic sheet, securing the edges of the plastic with dirt and weighting the sheet’s center down with a rock. The plastic should now form a cone(圆锥体) with 45-degree-angled sides. The low point of the sheet mustbe centered directly over, and no more than three inches above, the cup.The solar still works by creating a greenhouse under the plastic. Ground water evaporates (蒸发) and collects on the sheet until small drops of water form, run down the material and fall off into the cup. When the container is full, you can suck the refreshment out through the tube, and won’t have to break down the still every time you need a drink.1. What do we know about the solar still equipment from the first paragraph?A. It’s delicate.B. It’s expensive.C. It’s complex. .D. It’s portable.2. What does the underlined phrase “the water catcher” in paragraph 2 refer to?A. The tube.B. The still.C. The hole.D. The cup.3. What’s the last step of constructing a working solar still?A. Dig a hole of a certain size.B. Put the cup in place.C. Weight the sheet’s center down.D. Cover the hole with the plastic sheet.4. When a solar still works, drops of water come into the cup from .A. the plastic tubeB. outside the holeC. the open airD. beneath the sheetBIts most keen advocates say that global warming is gradually ruining our parts of our planet. But the effects of the phenomenon might be felt more positively a little closer to home, after scientists claimed that it would make flowers smell sweeter.Some flowers could give out a smell that is nine times more fragrant than they currently produce, according to a report. It says that a temperature increase of between 1℃ and 5℃ will vastly increase the ability of flowers to produce their sweet smells.The study suggests that plants are able to produce more terpenes (萜烯) — the chemicals that give them their smells —in hotter conditions. Despite the environmental risk linked to climate change, the effect on flowers could also help bee populations as the stronger smells make flowers easier to find and pollinate. It also found that the effect could be more significant in cooler countries such as the UK and would have a strong impact on fruit trees.The findings come as the unseasonably warm autumn weather this year has led to reports that plants are being "tricked" into blooming early.Guy Barter described the findings as interesting and said it could have a significant effect on lightly scented flowers. "We think about climate change in terms of rising temperatures and sea levels, but there are more delicate potential effects which we have not thought about," he said.Last year, experts warned the average global temperature had risen by 0.5℃ in 50 years. They predicted temperatures will increase by 3℃ over the next century, causing a rise in sea levels, flooding, disease outbreaks and mass migration of refugees (难民).The researchers looked at a variety of plants. In the paper the researchers said, "The species with the highest increases in emissions were those with the lowest fragrance rates. The increases calculated for floral terpene emissions show that very significant increases in the amount of floral scents will likely occur in a warmer world. The rates of floral terpene emission by the end of the century could increase 0.34—9.1 times because of a 5℃increase in the average maximum temperature during the flowering peak of the season."5. We can infer from the text that in England .A. plants bore more fruits in autumn this yearB. the seasons weren’t in order this whole yearC. the autumn of this year was a little coolerD. plants began to produce flowers early in autumn this year6. What Barter said indicates that .A. every coin has two sidesB. a miss is as good as a mileC. don’t claim to know what you don’t knowD. don’t put the cart before the horse7. The last paragraph implies that in hotter conditions .A. plants will have the lowest fragrance ratesB. plants will send more sweeter chemicalsC. plants will suffer the rising temperatureD. plants will finish their flowering peak soon8. Which is the best title of the passage?A. Will plants produce more chemicals in the future?B. Is it easier to find sweeter flowers everywhere?C. Could global warming make flowers smell sweeter?D. Do flowers smell stronger in the cold temperature?Ⅲ. 语法填空Walking down the city streets, you look up and see 1 red telephone box. Behind it, on the road, a big red double-floor bus passes by, 2 (carry) citizens and tourists. This is London. And the red is what the city is famous 3 .Modern transportation has changed the way we lead our lives. One important means of transport has been the bus. In London, buses take on a bigger role. They are used to visit the city. Red tourist buses have open 4 (roof), which let people take photos, have an amazing view of the city and enjoy 5 (them) as they drive past Big Ben, the Thames and so on.But how did the bus become unique to London culture? Horse-drawn buses enjoy a history of more than 180 years. They 6 (use) in London since 1829. By the early 20th century, motor-buses were driving around London. Bus companies used different colors at the time. One of the 7 (big) companies chose red because the bright colour made 8 easy for the citizens to pick out the bus. In 1933, when Londontransport was grouped into a single company, they chose the most 9 (wide)used color at the time-red.And so the color red stayed in London. But it was in the mid-1950s 10 the red double-floor was born. Its name is the Routemaster. Built between 1954 and 1968, they still look traditional. Like they have been frozen in time.Ⅳ. 短文改错假定英语课上老师要求同桌之间互换修改作文，请你修改你同桌写的以下作文。

Unit 4Global warming[导语]你知道全球变暖会给人类的生活和环境带来哪些变化吗？Short and Long Term Effects of Global Warming·Climate changeGlobal warming is causing the temperature of the earth to rise slowly，causing massive global changes to our natural environment.·Rising sea levelGlobal warming is rapidly melting glaciers around the globe，causing a rising sea level and possibly coastal flooding and other weather problems in the future.·Ecosystem changesGlobal warming is changing certain ecosystems throughout due to temperature fluctuations.Animals and plants are being forced to adapt to this，and，as a result，are dying off.·Breakdown of the ozone layerGlobal warming is creating holes in the ozone layer，primarily from human use of products that emit poisonouschemicals.The ozone layer absorbs UV radiation from the sun.The holes are causing amounts of poisonous chemicals present in our breathing air to increase at a rapid rate.[词海拾贝]1．glacier n．冰川2．ecosystem n．生态系统3．fluctuation n．波动4．ozone n．臭氧5．emit v t.发出，放射[问题思考]1．What effects is global warming causing?_______________________________________________________ 2．Is it serious to have holes in the ozone layer?_______________________________________________________ 答案：1.Climate change，rising sea level，ecosystem changes and breakdown of the ozone layer.2．Yes，it is.Ⅰ.将单词与其正确释义连线1．consume A．图表；曲线图2．graph B．现象3．phenomenon C．燃料4．fuel D．平均的5．trend E．趋势；倾向6．mild F．温和的；温柔的7．consequence G．环境；情况8．circumstance H．奉献9．average I．消费；消耗10．contribution J．结果答案：1－I2－A3－B4－C5－E6－F7－J8－G9－D10－HⅡ.根据所给汉语提示写出单词1．____________ n．洪水；水灾2．____________ v t.反对；对抗3．____________ adj.平稳的；持续的4．____________ adj.分布广的；普遍的5．____________ v t.拥护；提倡，主张6．____________ n．污染；弄脏答案：5．advocateⅢ.根据英语释义写出单词1．________：a quick look2．________：an amount or a number of sth3．________：to pay money regularly to support a charity 4．________：to express something in speech or writing，especially in a definite or formal way5．________：happening or chosen without any definite plan，aim or pattern6．________：to take a particular direction7．________：a sudden event resulting in great loss and misfortune8．________：the limits between which sth varies；a set of products of a particular type答案：5．randomⅣ.选用短语的适当形式完成句子keep on；be opposed to；come about；result in；subscribe to；go up；quantities of；even if1．There are large _______________________________ rain in this area.答案：quantities of2．Do you know how global warming ____________________?答案：comes about3．I have never ________________ the view that schooldays are the happiest days of your life.答案：subscribed to4．If you want to make the kite __________________，pull the string hard，and then release it slowly.答案：go up5．His careless speech ____________________________ much argument.答案：resulted in6．We ___________________ the practice of power politics between nations.答案：are opposed toⅤ.领会句子所用的句型并译成汉语1．That probably does not seem much to you or me，but it is a rapid increase when_compared_to other natural changes._______________________________________________________ _______________________________________________________答案：这个数值对你我来说可能是无所谓的，但是跟其他自然变化相比拟而言，这却是一种快速的增长。

Unit 2 第4课时Ⅰ.单项填空从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

1．She's very________to ring me tonight.A．probable B．possibleC．likely D．hopeful2．He never tidies his room and his mother never tries to make him________it.A．did B．does C．do D．doing3．If you try________an automobile that pleases every possible driver, you end up with a car with every possible feature, but that pleases nobody.A．to design B．designingC．to have designed D．having designed4．To speak English fluently, you had better read as many English articles________you can.A．when B．whileC．as D．since5．I'd________that house for the time being; house prices are rising sharply at the moment.A．stick to B．hold on toC．put up with D．fit in with6．His brother's example inspired him to________for the football team.A．try out B．make outC．pick out D．turn out7．Who________the exam results？They were supposed to be confidential until tomorrow.A．found out B．let outC．picked out D．tried out8．Jean doesn't want to work right away because she thinks that if she________a job she probably wouldn't be able to see her friends very often.A．has to get B．were to getC．had got D．could have got9．________for your help, we'd never have been able to get over the difficulties.A．Had it not B．Had it not beenC．If it were not D．If we had not been10．Oh, what a nuisance! It________so easy for me to bring those photographs I wanted to show you, and I have left them on the table at home.A．would have been C．would beB．had been D．wasⅡ.完成句子根据汉语提示，完成下列句子。

Unit 4 第2课时Ⅰ.单项填空从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

1．Hastily, she picked out two books________，without looking at the titles.A．at peace B．at easeC．at random D．at least答案：C本题题意：她在匆忙中胡乱拿了两本书，连书名也没看。

at random表示“随意地；胡乱地；任意地”。

2．The professor's lectures were so abstruse that students tended to________them.A．avoid B．avoidingC．being avoided D．be avoided答案：A本题题意：这个教授的课如此深奥以致于学生们常常逃课。

attend to do sth 表示“往往会……；常常会……”。

3．It is impossible to cooperate with a person whose methods are completely________to your own.A．addicted B．accustomedC．opposed D．used答案：C本题题意：你不可能同一个与你自己方法完全相反的人合作。

be opposed to 表示“与某人意见、看法等截然相反”。

4．The warning failed to sink in, and he got into trouble as a________.A．situation B．conditionC．consequence D．conclusion答案：C本题题意：他没理解那个警告，因此惹上了麻烦。

as a consequence表示“结果”。

5．Fee cast her no more than a passing________before leaving.A．stare B．glanceC．look D．appearance答案：B本题题意：菲在离开时仅给了她匆匆一瞥。

Unit 4 第1课时Ⅰ.单词拼写根据下列句子所提供的汉语提示或所给单词的首字母，写出各单词正确的完全形式(每空限写一词)。

1．His old car________(消耗) much gasoline.2．Provided that________(情况)permit, we shall hold the meeting next week.3．A better understanding of these________(现象) may completely alter our conception of the nature of the universe.4．The invention of paper was a great c________to human civilization.5．They are trying to find a cleaner________(燃料)for cars.6．He collected a q________of curious information.7．The________(数据)should be updated once a week.8．It was an absurd arrangement, and bound to lead to________(灾难)．9．He was not so strongly o______to the idea as the others.10．She studied hard, and in c________she passed the examination.11．With such guns, how can we get out of r________of the enemy?12．I________(扫视)up to see who had come in.13．The production of their factory goes________(稳步地)upward.14．I have a________(趋势)to make over my ideas to match his.15．Computers are now in w________use.16．By 2008, Chinese women had received 9.5 years of education on a________.17．I am calling on b______of the Private Teacher Company.18．The elephant is the largest land animal in e________.19．He is an________(与电有关的) engineer.20．He was wearing c________clothes, not his school ones.答案：1．consumed/consumes译文：他的旧汽车耗油很多。

Unit 3 第4课时Ⅰ.单项填空从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

1．I can't find my keys. If you________them, please put them on the table.A．come from B．come aboutC．come across D．come out答案：C本题题意：我找不到我的钥匙，如果你在哪里看到的话，就将它们放在桌上。

come across表示“(偶然)遇见；碰见；发现”。

2．They warn that one－third of those remaining are________of disappearing.A．at war B．at riskC．at peace D．at present答案：B本题题意：他们警告说，这些处境不妙的动物中将近三分之一正面临着灭绝的危险。

at risk表示“处于危险中”。

3．We'll meet you in a week，________，on March 1.A．for example B．such asC．that is D．to start with答案：C本题题意：我们一星期后见，即三月一号那天见。

that is(to say)用作插入语，表示“也就是说”。

4．She has learnt to live with HIV and the fact she will one day________AIDS.A．obtain B．affordC．develop D．strike答案：C本题题意：小华已经学会了在携带艾滋病病毒并会最终得艾滋病的处境下生活。

develop表示“(患病)；出现(问题)；(疾病)开始侵袭；(问题)开始影响”。

5．One method of giving a patient medicine is________injection.A．with B．inC．on D．by答案：D本题题意：给病人用药的方法之一是注射。

Unit 5 第4课时Ⅰ.单项填空从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。

1．The demand varies________the season.A．in B．withC．from D．during答案：B需求随季节变化。

vary with sth表示“根据情况变化；变更”。

2．As he grew older, his________of art grew.A．admiration B．comprehensionC．consideration D．appreciation答案：D本题题意：随着年龄的增长，他对艺术的鉴赏力也提高了。

appreciation表示“欣赏”。

3．I can________that you will be satisfied with the result.A．determine B．decideC．guarantee D．appreciate答案：C本题题意：我保证你会对这个结果满意。

guarantee表示“保证；担保；保障”。

4．Winners will be________a trip to England.A．charged B．accusedC．rewarded D．awarded答案：C本题题意：优胜者将获得去英国旅游的奖赏。

reward表示“奖励；奖赏；给与报酬”。

5．The book is a big success in terms of the interest it________.A．mattered B．occurredC．aroused D．taken答案：C本题题意：就这本书所引起的兴趣而言，它写得极其成功。

arouse表示“激起；引起(感情、态度)”。

6．When he was through speaking, he________his watch and left.A．stared at B．glared atC．glanced at D．gazed at答案：C本题题意：他讲完看一看手表，就退席了。

【创新方案】高中英语 Unit4 Section Ⅱ Warming Up & Reading Language points课时跟踪检测新人教版选修6Ⅰ.选词填空1．If you to the newspap er, it’ll be delivered to your door.答案：subscribe2.Buy vegetables in small , for your immediate use.答案：quantities3.People to need less sleep as they get older.答案：tend4.Most of us are to the death penalty.答案：opposed5.The government needs to clearly its policy on this issue.答案：state6.Even the cheapest property was out of our price .答案：range7.The man nervously at his watch.答案：glanced8.Paul is making progress.答案：steady9.I asked a few questions of Ellen as we sat there.答案：random10.He broke the law，and now he must face the of his actions.答案：consequencesⅡ.单项填空1．The committee is totally opposed ________any changes being made to the plans.A．of B．onC．to D．against解析：选C。

句意：该委员会彻底反对对计划的任何改动。

be opposed 与to 连用，表示“反对……”。

Unit 4 Global warming单元综合测评(时间:100分钟分值:120分)选择题部分Ⅰ.阅读理解(共两节,满分35分)第一节(共10小题;每小题2.5分,满分25分)阅读下列短文,从每题所给的A、B、C和D四个选项中,选出最佳选项。

AThe number of buses, taxis and other vehicles on Kenya’s roads is growing every day. Now, the country’s first electric-powered motorbikes are coming into the market. The bike is designed to cut down on pollution and aimed at low-income communities. Most motorbikes used in Kenya depend on gasoline as fuel, but not this new motorbike.Three university students developed the new ecotype bike. It catches the sun’s energy, stores it in batteries and uses it to charge the electric motor. Robert Achoge is one of the student inventors. “Our hope is that by th e fifth year, we will be able to cover the whole of Kenya with the electric motorcycle so as to conserve the environment and provide affordable transport.”The students have set up a charging station for the motorbikes in Nairobi. Riders can plug the bikes into any electrical outlet. The small battery can run for 70 kilometres when fully charged. Once the power is used up, the motorbike has to return to the station while another charged battery is connected to the bike. The US African Development Foundation (USADF) is providing finance for two solar-powered charging stations in the Kenyan port of Kisumu.Each ecotype bike costs about $700. One taxi operator says the new motorbike costs less to operate than that running on traditional gasoline. “When it comes to buying gasoline, there’s no need. It’s basically good for various things. As long as you won’t take quite a heavy load(装载量), you can go with it anywhere. Otherwise, it may break down halfway. But now people still have a preference to the gas-powered bi kes.”A Nairobi dealership is selling the ecotype bikes. Businessman Kennedy Kusimba hopes they will become popular. We also know they are more reliable compared to the gas-powered bikes.1.What do we know about the ecotype bike?A.It was developed by the USADF.B.Its energy comes from the sunlight.C.It can charge itself while running.D.It does more harm to the environment.2.What do people think of the ecotype bike?A.It’s better not to use it to carry too much.B.It is a good choice for the long-distance journey.C.It will take the place of gas-powered bikes soon.D.It is much more expensive than a traditional motorbike.3.Where does the text probably come from?A.A research plan.B.An advertisement.C.A government report.D.A science magazine.BSeveral years ago, the mayor of Chicago, Illinois, visited Germany, a leader in green roof design. Former Mayor Richard Daley later decided to have vegetation planted on Chicago City Hall. Today, the tops of many other buildings also look like parks. In Canada, the Coast Plaza Hotel in Vancouver has a forest on its roof. New York City has an unusual demonstration farm for hydroponics(水培).The farm is on a boat called the Science Barge. Rainwater and purified river water are used to grow lettuces, tomatoes, cucumbers and peppers. The farm shows the possibilities for designing rooftop systems.Green roofs are designed to save energy and capture rainwater. Rooftops covered with plants help keep buildings cool. They can extend the life of a roof. And they can reduce water running off into streets and storming water systems.Experts say green roofs usually do not get much above twenty-seven degrees Celsius. So temperatures might not be a problem for growing. But rooftop gardeners have to be careful not to put too much weight on the roof. This is true whether plants are grown in soil or water.Earlier in 2008, researchers in Texas reported that green roofs can reduce a building’s air conditioning costs by about one fifth compared to blacktop roofs. But they also reported that not all green roofs perform equally well. They found that designs differ in their ability to keep buildings cool and to capture rainwater. The researchers put experimental roofs on top of metal insulated boxes, to recreate green roof conditions. The study compared products from six companies to help businesses understand how to improve their designs. Each rooftop had sixteen different kinds of plants native to Texas. The researchers said the presence of native plants likely helped all the green roofs capture water better compared to sedums. Sedums are plants that need little water and often are used on green roofs. The native plants could take in more water and release more of it to the atmosphere.4.The author writes Paragraph 1 to .A. tell us what is the green roof designB. tell us Germany is the country that leads or guides the green roof designC. introduce some famous hotels in the worldD. lead to the topic of the passage5.The underlined word “storming” in Paragraph 2 can be replaced by “”.A. attackingB.controllingC.attractingD.managing6.According to the passage, which conclusion is WRONG?A. Sometimes green roofs may break down the house.B. Not all the green roofs can reduce the building’s air conditioning costs equally.C. Different designs of green roofs have different effects on buildings.D. Sedums are a kind of plants native to Texas.CThe Antarctic’s ice-white environment is going green and facing other unexpected threats. Scientists say that as temperatures go up in the polar region, invading (入侵) plants and insects, including the flies, cause a major threat.More and more of these invaders, in the form of larvae (幼虫) or seeds, are surviving in coastal areas around the South Pole, where the temperature has risen by more than 3℃over the past three decades. Glaciers have retreated, exposing more land which has been occupied by mosses that have been found to be growing more quickly and thickly than ever before—providing potential green homes for invaders.“The common house flies are a perfect example of the problem the Antarctic now faces from invading species,” said Dominic Hodgson of the British Antarctic Survey. “It comes in on ships, where it exists in kitchens and then at bases on the continent. It now has an increasing chance of surviving in the Antarctic as it warms up, and that is a worry. Insects like the house flies carry bacteria that could have a deadly effect on native life forms.”The Antarctic has several native species of insects. Together with its native mosses, these are now coming under the increased threat from three major sources: visiting scientists, increasing numbers of tourists and global warming. However, it is global warming that is the main driver of the greening of the Antarctic.In 2015, more than 38,000 tourists visited the Antarctic. “These tourists are often very careful about not leaving waste or having mud. But they could carry seeds or larvae on their boots when they set foot on the Antarctic,” said Hodgson.More and more invasive insects and plants have been found on the Antarctic and have required removal. “The insects and plants that are native to the Antarctic have survived there for thousands of years,” said Hodgson. “We have got to act now if we want to save the environment.”7.What does the underlined word “mosses” in Paragraph 2 refer to?A. A kind of plants.B. House flies.C. Coastal areas.D. A kind of animals.8.What is the main cause of the Antarctic going green?A. Scientists’ coming.B. Global warming.C. A growing number of visitors.D. The rapid spread of native planting.9.What do we know about the house flies in the Antarctic?A. They are native to the Antarctic.B. They will disappear due to the cold climate.C. They seriously affected the Antarctic native species.D. They directly fly to the Antarctic from nearby islands.10.What’s the best title for the text?A. The Antarctic is faced with various threatsB. The Antarctic is becoming green and energeticC. More and more scientists get to explore the AntarcticD. Global warming has caused the temperature in the Antarctic to rise up第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。