1、Lesson 2Protecting the Sea课后篇巩固探究一、根据句意和首字母提示补全句子,使句子完整正确1.Something must be done to prevent our city from being p by thick smoke.答案:polluted2.The b on smoking has come into effectless people smoke in public now.答案:ban3.The train went slower and slower until it stopped a.答案:altogether4.A new man was
2、 appointed to h the crisis.答案:handle5.When p a speech in public,dont be nervous.答案:presenting6.When we say someone is i,we are praising him/her as a wise one.答案:intelligent二、用所给单词的适当形式填空1.Sydney had five strategies:save energy,save water,reduce trash,prevent (pollute),and protect the environment.答案:
3、pollution2.Modern (industry) civilizations make good use of time,energy and resources.答案:industrial3.Its job is to help protect (agricultural) and other resources from threats and damage by wildlife.答案:agriculture4.Plants can defend themselves by using both physical and (chemistry) means.答案:chemical
4、5.She can find no (solve) to her financial troubles.答案:solution6.Many reading disorders seem to have nothing to do with (intelligent).答案:intelligence7.Nowadays,almost every (explore) uses the Global Positioning System(GPS) to make his journey safer.答案:explorer三、句型转换1.A new man was appointed to deal
5、with the problem.A new man was appointed the problem.答案:to handle2.He earns his living by growing rice.He by growing rice.答案:makes a living3.We do not have any more information at the present time.We have more information .答案:no;at present4.He is very interested in sea animals.He in sea animals.答案:s
6、hows great interest5.There were two doctors and three nurses in the room in all.There were two doctors and three nurses in the room .答案:altogether四、从括号中选用合适的短语填空,注意其形式(其中有一项是多余的)show interestdeal withmake a livingfind outsound likemake notesmake sure1.My uncle by repairing second-hand cars.答案:makes
7、a living2.He tried the truth.答案:to find out3. you close all the lights before you leave.答案:Make sure4.What she said a great idea to me.答案:sounds like5.Please tell me how you your broken bicycle that day.答案:dealt with6.John and his partner are good at in class.答案:making notes五、阅读理解导学号06944001Ocean No
8、ise PollutionSome scientists say that animals in the ocean are increasingly threatened by noise pollution caused by human beings.The noise that affects sea creatures comes from a number of human activities.It is caused mainly by industrial underwater explosions,ocean drilling,and ship engines.Such n
9、oises are added to natural sounds.These sounds include the breaking of ice fields,underwater earthquakes,and sounds made by animals themselves.Decibels(分贝)measured in water are different from those measured on land.A noise of 120 decibels on land causes pain to human ears.In water,a decibel level of
10、 195 would have the same effect.Some scientists have proposed setting a noise limit of 120 decibels in oceans.They have observed that noises above that level can frighten and confuse whales.A team of American and Canadian scientists discovered that louder noises can seriously injure some animals.The
11、 research team found that powerful underwater explosions were causing whales in the area to lose their hearing.This seriously affected the whales ability to exchange information and find their way.Some of the whales even died.The explosions had caused their ears to bleed(流血) and become infected(感染).
12、Many researchers whose work depends on ocean sounds object to a limit of 120 decibels.They say such a limit is a greater danger than they believed.They want to prevent noises from harming creatures in the ocean.1.According to the passage,which of the following is increasingly dangerous to sea creatu
13、res?A.The sound of a car. B.The sound of voices.C.Man-made noise pollution.D.The sound of steps.答案:C解析:由第一段可知,人类活动制造的噪音污染正日益对海洋生物产生危害。2.According to the passage,natural sounds include all of the following EXCEPT .A.sounds made by animals themselvesB.ocean drillingC.underwater earthquakesD.the breaki
14、ng of ice fields答案:B解析:由第二段可知,ocean drilling属于人类活动制造的噪音,而非natural sounds。3.Which of the following is true of whales?A.They wont be confused by noises.B.They are deaf to noises.C.Their ability to reproduce will be lowered by high-level noises.D.Their hearing will be damaged by high-level noises.答案:D解
15、析:由第五段中的“.were causing whales in the area to lose their hearing.”可知,高分贝的声音会损伤鲸鱼的听力。4.According to the passage,what will scientists most probably do in the future?A.They will work hard to reduce ocean noise pollution.B.They will protect animals from harmful noises.C.They will try to set a limit of 12
16、0 decibels.D.They will study the effect of ocean noise pollution.答案:B解析:由最后一段可知,科学家们想要努力保护海洋生物免受噪音的伤害。六、七选五阅读理解根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(2017北京高考)Every animal sleeps,but the reason for this has remained foggy.When lab rats are not allowed to sleep,they die within a month.1.One idea i
17、s that sleep helps us strengthen new memories.2.We know that,while awake,fresh memories are recorded by reinforcing (加强)connections between brain cells,but the memory processes that take place while we sleep have been unclear.Support is growing for a theory that sleep evolved so that connections bet
18、ween neurons(神经元)in the brain can be weakened overnight,making room for fresh memories to form the next day.3.Now we have the most direct evidence yet that he is right.4.The synapses in the mice taken at the end of a period of sleep were 18 per cent smaller than those taken before sleep,showing that
19、 the connections between neurons weaken while sleeping.If Tononis theory is right,it would explain why,when we miss a nights sleep,we find it harder the next day to concentrate and learn new informationour brains may have smaller room for new experiences.Their research also suggests how we may build
20、 lasting memories over time even though the synapses become thinner.The team discovered that some synapses seem to be protected and stayed the same size.5. “You keep what matters,”Tononi says.A.We should also try to sleep well the night before.B.Its as if the brain is preserving its most important m
21、emories.C.Similarly,when people go for a few days without sleeping,they get sick.D.The processes take place to stop our brains becoming loaded with memories.E.Thats why students do better in tests if they get a chance to sleep after learning.F.“Sleep is the price we pay for learning,” says Giulio Tononi,who developed the idea.G.Tononis team measured the size of these connections,or synapses,in the brains of 12 mice.答案:15 CEFGB