6月大学英语四级阅读练习及答案(十二).pdf
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1、6月大学英语四级阅读练习及答案(十三)Japan is getting tough about recyclingand not in the paper and plastic kind ofway.Recently,the country requires that all electronic goodsTVs,VCRs,stereos,andmorebe recycled.But recycling will not beleft to consumers,instead,the deviceswill be sent to the original manufacturer for
2、proper disposal.练习题:Choose correct answers to the question:1.According to the present regulations of Japan,the recycling of paper andplastic will be the responsibility of.A.,the governmentB.the manufacturersC.the consumersD.the sellers2.Which of the following is NOT the character of plastics?A.Most
3、electronic products contain plastics.B.It retains its original strength through reprocessing.C.Recycled plastics can be integrated into new products.D.Plastics will lose flexibility after a certain period of time.3.According to the passage,the term“plastic sandwich“refers toA.a kind of sandwich-shap
4、ed toy made of plasticsB.a kind of plastics with different integration in each layerC.a kind of plastics with maximum strength and flexibilityD.a kind of plastics made of 100%recycled materials4.In the passage,it is implied but NOT stated t h a t.A.disposing the plastics is one of NEC Corp/s busines
5、sesB.magnesium is an ideal material for the case of TVC.21-inch TV with magnesium case isn/t very popular so farD.magnesium must be better than the plastics5.The author writes this passage in order to.A.informB.instructC.predictD.persuadel.C 推理判断题。文章首段提到了电子产品的回收利用与纸张和塑料不同;本段最后一句中的but表明了以上不同点在于电子产品的回
6、收不依靠消费者,而依靠生产者。结合以上两点,可以推断纸张和塑料的回收利用主要靠消费者,因此选项C 为正确答案。2.B事实细节题。本题考查列举处。第 2 段第3 句列举了塑料的特性,对照选项和该句,就能发现文中明确提到选项A、C、D,而选项B 显然与原文意思相反。3.B事实细节题。本题考查复合句的理解。第 2 段第4 句是一个非限制性定语从句,是 plastics sandwich的定义,选项B 是对该定语从句所述事实的总结,因此选项B正确。选 工 真 A 在文中没有提及;选项C 中的maximum是对原文sufficient的曲解;选项D 中的100%这一数据不准确,文中只提到plastics
7、 sandwich里层是100%的再生塑料。4.C推理判断题。本题考查转折处。最后一段倒数第2 句中的Unfortunately一词指出了用镁作机壳的电视机很贵,从而暗示它们并不受消费者欢迎,所以选项 C 正确。选项A 属原文明确表达的意思。本段第2 句只指出镁是一种理想的再生材料(ideal for recycling),因此选项B 不对;全文并未比较塑料和镁哪个更好,因此选项D 不对。6月大学英语四级阅读练习及答案(十)If the salinity(含盐量)of ocean waters is analyzed,it is found to vary onlyslightly from
8、place to place.Nevertheless,some of these small changes are important.There are three basic processes that cause a change in oceanic salinity.One of theseis the subtraction of water from the ocean by means of evaporation-conversion ofliquid water to water vapor.In this manner,the salinity is increas
9、ed,since the saltsstaybehind.If this is carried to the extreme,of course,white crystals of salt would beleft behind.The opposite of evaporation is precipitation(降水),such as rain,by which wateris added to the ocean.Here the ocean is being diluted(稀释)so that the salinity isdecreased.This may occur in
10、areas of high rainfall or in coastal regions where riversflow into the ocean.Thus salinity may be increased by the subtraction of water byevaporation,or decreased by the addition of fresh water by precipitation orrunoff(形成地表水部分的降水).Normally,in tropical regions where the sun is very strong,the ocean
11、salinity issomewhat higher than it is in other parts of the world where there is not as muchevaporation.Similarly,in coastal regions whererivers dilute the sea,salinity issomewhat lower than in other oceanic areas.A third process by which salinity may be altered is associated with the formationand m
12、elting of sea ice.When seawater is frozen,the dissolved materials are leftbehind.In this manner,seawater directly beneath freshly formed sea ice has a highersalinity than it did before the ice appeared.Of course,when this ice melts,it will tendto decrease the salinity of the surrounding water.In the
13、 Weddell Sea,off Antarctica,the densest water in the oceans is formed asa result of this freezingprocess,which increases the salinity of cold water.This heavywater sinks and is found in the deeper portions of the oceans of the world.练习题:Choose correct answers to the question:l.The best title of the
14、passage can be.A.Typical Oceans and Their Respective FeaturesB.The Causes of the Changes in Salinity of Ocean WaterC.Different Oceans Have Different SalinityD.The Precipitation and Evaporation of Oceans2.Which of the following processes will increase salinity of ocean waters?A.Evaporation.B.Precipit
15、ation.C.Melting.D.Dilution.3.According to this passage,the sea _ is likely to have the lowest salinity.A.in tropical areasB.off AntarcticaC.of high rainfallD.with abundant4.The Weddell Sea.A.is a good example of increased salinity in freezing sea waterB.is much larger in area than the Arctic oceansC
16、.has a much lower salinity now than everD.has the denser water in its upper parts5.Coastal regions are mentioned as cases w h e r e.A.sea water is less salty because fresh water joins inB.rivers carry industrial exhaust into seaC.sea ice tends to melt more quickly than in the center of oceansD.heavy
17、 water sinks to the deeper portions of the oceansl .B主旨大意题。本文第1 段第3 句是全文的主题句,告诉读者有三种原因致使海洋盐分变化并逐一介绍这三种原因,选项B 比较全面地归纳了本文的主题。选项A 和 C 中心词为oceans,不妥,选项D 只提及了前面两种原因,不全面。2.A事实细节题。只要明白第1 段第5 句中的in this manner是指第4 句中的evaporation,不难做出正确选择。选项B、C 会使含盐量减少,很容易排除。具体的反证分别出现在第2 段首句、第 3 段尾句和第4 段首句。3.C推理判断题。综合3 种情况,造
18、成海洋含盐量低的原因有:降雨多、日晒少、远离热带和海冰融化,由此可推断选项C 最符合。A 和 D 是使海水含盐量增加的,因此可排除。B 是否一定海水含盐低,文中并未提到。4.A推理判断题。选项A 是对最后一段第1 句的同义改写。同一句可知选项 C 错。选项B 根本没有提及。文章最后一句表明D 正好与事实相反。5.A 推理判断题。coastal regions字眼在文章中提到两遍,分别在第2 段第3 句及第3 段最后一句。只要能够迅速查找到任何一处均可做出正确判断为A。B和 C 无原文支持;D 张冠李戴,原文提及D 内容涉及的是Weddell Sea,而非coastalregionso6月大学英
19、语四级阅读练习及答案(二)It happens to every medical student sooner or later.You get a cough thatpersists for a while.Ordinarily,you would just ignore it-but now,armed with yourrapidly growing medical knowledge,you cant help worrying.The cough could meanjust a cold,but it could also be a sign of lung cancer.For
20、 doctors in training,nurses and medical journalists,hypochondria is anoccupational danger.The feeling usually passes after a while,leaving only a funnystory to tell at a dinner party.But for the tens ofthousands who suffer from truehypochondria they live in constant terror that they are dying of som
21、e awfuldisease,or even several awful diseases at once.Doctors can assure them that there/s nothingwrong,but since the cough is real,the assurances fall on deaf ears.And because nophysician or test can offer a 100%guarantee that one doesnt have cancer,ahypochondriac always has fuel to feed Iris.or he
22、r worst fears.Hypochondriacs dont harm just themselves;they block the whole healthcaresystem.Although they account for only about 6%of the patients who visit doctorsevery year,they tend to burden their physicians with frequent visits that take upexcessive amounts of time.And the problem may be worse
23、,thanks to the popularityof medical information on the Internet.They go on the Web and learn about newdiseases and new presentations of old diseases that they never even knew aboutbefore.Doctors have taken to calling this phenomenon cyberchondria(网络疑病症).练习题:Choose correct answers to the question:1.A
24、ccording to the passage,if you suffer from hypochondria,A.you must be a medical student,or a medical workerB.you are haunted by a possibly inexistent diseaseC.you will never get rid of this diseaseD.you always tell funny stories at dinner parties2.Which of the following best summarizes the main idea
25、 of the passage?A.Hypochondria happens to everybody sooner or later.B.We needn/t worry about hypochondria since it is not dangerous at all.C.Hypochondria originates from too much knowledge of medicine.D.Not only individuals but also the healthcare system might be disturbed byunnecessary terrors.3.Wh
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