1、Lesson 2Protecting the Sea课后篇巩固提升一、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.When p a speech
2、in public,dont be nervous.答案presenting5.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pollution2.Modern (industry) civilizations make good use
3、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chemical5.She can find no (solve) to her financial troubles.答案soluti
4、on6.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 with the crisis.A new man was appointed the crisis.答案to handle2
5、.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shows great interest5.There were two doctors and three nurses in the r
6、oom in all.There were two doctors and three nurses in the room .答案altogether四、从括号中选择合适的短语填空,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 a living2.He tried the truth.答案to find out3. you close all the lights b
7、efore 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Ocean Noise PollutionSome scientists say that animals in the ocean are increasingly threatened
8、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 noises are added to natural sounds.These sounds include the breaking of ice fields,under
9、water 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 195 would have the same effect.Some scientists have proposed setting a noise limit of
10、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 research team found that powerful underwater explosions were causing whales in the are
11、a 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).Many researchers whose work depends on ocean sounds object to a limit of 120 decibels.T
12、hey 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 creatures?A.The sound of a car.B.The sound of voices.C.Man-made noise pollution.D.The sound o
13、f steps.答案C解析细节理解题。由第一段可知,人类活动制造的噪声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 breaking of ice fields答案B解析细节理解题。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
14、 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解析细节理解题。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
15、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 120 decibels.D.They will study the effect of ocean noise pollution.答案B解析推理判断题。
16、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 is that sleep helps us strengthen new memories.2.We know that,while awake
17、,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 between neurons(神经元)in the brain can be weakened overnight,making room for
18、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 percent smaller than those taken before sleep,showing that the connections between neurons weaken while sleeping.If Tononis theory
19、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 lasting memories over time even though the synapses become thinner.The t
20、eam 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 memories.C.Similarly,when people go for a few days without sleeping,they g
21、et 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
