雅思阅读长难句分析200句.pdf

阅读难点关键句200句支1.Wearing a seat belt saves lives;it reduces your chance of death or serious injury by more than half.2.But it will be the drivers responsibility to make sure that children under 14 do not ride in the front unless they are wearing a seat belt of some kind.3.However,you do not have to wear a seat belt if you are reversing your vehicle;or you are making a local delivery or collection using a special vehicle;or if you have a valid medical certificate which excuses you from wearing it.4.Remember you may be taken to court for not doing so,and you may be fined if you cannot prove to the court that you have been excused from wearing it.5.Professor Taiju Matsuzawa wanted to find out why otherwise healthy farmers in northern Japan appeared to be losing their ability to think and reason at a relatively early age,and how the process of ageing could he slowed down.6.With a team of colleagues at Tokyo National University,he set about measuring brain volumes of a thousand people of different ages and varying occupations.7.Computer technology enabled the researchers to obtain precise measurements of the volume of the front and side sections of the brain,which relate to intellect（智能）and emotion,and determine the human character.8.Contraction of front and side parts as cells die off was observed in some subjects in their thirties,but it was still not evident in some sixty and seventy-year-olds.9.The findings show in general terms that contraction of the brain begins sooner in people in the country than in the towns.10.White collar workers doing routine work in government offices are,however,as likely to have shrinking brains as the farm worker,bus driver and shop assistant.11.We know that you have a high opinion of the kind of learning taught in your colleges,and that the costs of living of our young men,while with you,would be very expensive to you.12.But you must know that different nations have different ways of looking at things,and you will therefore not be offended if our ideas of this kind of education happen not to be the same as yours.13.We are,however,not the less obliged by your kind offer,though we refuse to accept it;and,to show our grateful sense of it,if the gentlemen of Virginia will send us a dozen of their sons,we will take care of their education,teach them in all we know,and make men of them.14.In what now seems like the prehistoric times of computer history,the earths postwar era,there was quite a wide-spread concern that computers would take over the world from man one day.15.Already today,less than forty years later,as computers are relieving us of more and more of the routine tasks in business and in our personal lives.We are faced with a less dramatic but also less foreseen problem.16.Obviously,there would be no point in investing in a computer if you had to check all its answers,but people should also rely on their own internal computers and check the machine when they have the feeling that something has gone wrong.17.Certainly Newton considered some theoretical aspects of it in his writings,but he was reluctant to go to sea to further his work.18.For most people the sea was remote,and with the exception of early intercontinental travellers or others who earned a living from the sea,there was little reason to ask many questions about it,let alone to ask what lay beneath the surface.19.The first time that the question“What is at the bottom of the oceans?”had to be answered with any commercial consequence was when the laying of a telegraph cable from Europe to America was proposed.20.At the early attempts,the cable failed and when it was taken out for repairs it was found to be covered in living growths,a fact which defied contemporary scientific opinion that there was no life in the deeper parts of the sea.21.For every course that he follows a student is given a grade,which is recorded,and the record is available for the student to show to prospective employers.22.All this imposes a constant pressure and strain of work,but in spite of this some students still find time for great activity in student affairs.23.The effective work of maintaining discipline is usually performed by students who advise the academic authorities.24.Much family quarrelling ends when husbands and wives realize what these energy cycles mean,and which cycle each member of the family has.25.Whenever possible,do routine work in the afternoon and save tasks requiring more energy or concentration for your sharper hours.26.We also value personal qualities and social skills,and we find that mixed-ability teaching contributes to all these aspects of learning.27.They also learn how to cope with personal problems as well as learning how to think,to make decisions,to analyse and evaluate,and to communicate effectively.28.The problem is,how to encourage a child to express himself freely and confidently in writing without holding him back with the complexities of spelling?29.It may have been a sharp criticism of the pupils technical abilities in writing,but it was also a sad reflection on the teacher who had omitted to read the essay,which contained some beautiful expressions of the childs deep feelings.30.The teacher was not wrong to draw attention to the errors,but if his priorities had centred on the childs ideas,an expression of his disappointment with the presentation would have given the pupil more motivation to seek improvement.31.Given the nature of government and private employers,it seems most likely that discrimination by private employers would be greater.32.The release of the carbon in these compounds for recycling depends almost entirely on the action of both aerobic and anaerobic bacteria and certain types of fungi.33.A spirited discussion springs up between a young girl who says that women have out grown the jumping-on-a-chair-at-the-sight-of-a mouse era and a major who says that they havent.34.They are trying to find out whether there is something about the way we teach language to children which in fact prevents children from learning sooner.35.Mathematicians who have tried to use the computers to copy the way the brain works have found that even using the latest electronic equipment they would have to build a computer which weighed over 10,000 kilos.36.Since different people like to do so many different things in their spare time,we could make a long list of hobbies,taking in everything from collecting matchboxes and raising rare fish,to learning about the stars and making model ships.37.They know that a seal swimming under the ice will keep a breathing hole open by its warm breath,so they will wait beside the hole and kill it.38.We may be able to decide whether someone is white only by seeing if they have none of the features that would mark them clearly as a member of another race.39.Although signs of dishonesty in school,business and government seem much more numerous in years than in the past,could it be that we are getting better at revealing such dishonesty?40.It is not quite a matter of disagreeing with the theory of independence,but of rejecting its implications:that the romances may be taken in any or no particular order,that they have no cumulative effect,and that they are as separate as the works of a modern novelist.41.His thesis works relatively well when applied to discrimination against Blacks in the United States,but his definition of racial prejudice as“racially-based negative prejudgments against a group generally accepted as a race in any given region of ethnic competition,M can be interpreted as also including hostility toward such ethnic groups as the Chinese in California and the Jews in medieval Europe.42.Gutman argues convincingly that the stability of the Black family encouraged the transmission of and so was crucial in sustaining-the Black heritage of folklore,music,and religious expression from one generation to another,a heritage that slaves were continually fashioning out of their African and American experiences.43.Even the folk knowledge in social systems on which ordinary life is based in earning,spending,organizing,marrying,taking part in political activities,fighting and so on,is not very dissimilar from the more sophisticated images of the social system derived from the social sciences,even though it is built upon the very imperfect samples of personal experience.44.There are several steps that can be taken,of which the chief one is to demand of all the organizations that exist with the declared objectives of safeguarding the interests of animals that they should declare clearly where they stand on violence towards people.45.It was possible to demonstrate by other methods refined structural differences among neuron types,however,proof was lacking that the quality of the impulse or its conduction was influenced by these differences,which seemed instead to influence the developmental patterning of the neural circuits.46.According to this theory,it is not the quality of the sensory nerve impulses that determines the diverse conscious sensations they produce,but rather the different areas of the brain into which they discharge,and there is some evidence for this view.47.The result of attrition is that,where the areas of the whole leaves follow a normal distribution,a bimodal distribution is produced,one peak composed mainly of fragmented pieces,the other of the larger remains.48.The Bible does not tell us how the Roman census takers made out,and as regards our more immediate concern,the reliability of present day economic forecasting,there are considerable difference of opinion.49.A survey conducted in Britain confirmed that an abnormally high percentage of patients suffering from arthritis of the spine who had been treated with X rays contracted cancer.50.Yet across the gulf of space,minds that are to our minds as ours are to those of the beasts that perish,intellects vast and cool and unsympathetic,regarded this earth with envious eyes,and slowly and surely drew their plans against us.51.Even the doctoral degree,long recognized as a required“union card in the academic world,has come under severe criticism as the pursuit of learning for its own sake and the accumulation of knowledge without immediate application to a professors classroom duties.52.While a selection of necessary details is involved in both,the officer must remain neutral and clearly try to present a picture of the facts,while the artist usually begins with a preconceived message or attitude which is then transmitted through the use of carefully selected details of action described in words intended to provoke associations and emotional reactions in the reader.53.Articles in the popular press even criticize the Gross National Production(GNP)because it is not such a complete index of welfare,ignoringon the one hand,that it was never intended to be,and suggesting,on the other,that with appropriate changes it could be converted into one.54.Other experiments revealed slight variations in the size,number,arrangement,and interconnection of the nerve cells,but as far as psychoneuaral correlations were concerned,the obvious similarities of these sensory fields to each other seemed much more remarkable than any of the minute differences.55.The Chinese have distributed publications to farmers and other rural residents instructing them in what to watch for their animals so that every household can join in helping to predict earthquakes.56.Supporters of the Star Wars defense system hope that this would not only protect a nation against an actual nuclear attack,but would be enough of a threat to keep a nuclear war from ever happening.57.Neither would it prevent cruise missiles or bombers,whose flights are within the Earths atmosphere,from hitting their targets.58.Civil rights activists have long argued that one of the principal reasons why Blacks,Hispanics,and other minority groups have difficulty establishing themselves in business is that they lack access to the sizable orders and subcontracts that are generated by large companies.59.During the nineteenth century,she argues,the concept of the“useful child who contributed to the family economy gave way gradually to the present day notion of the“useless child who,though producing no income for,and indeed extremely costly to its parents,is yet considered emotionally“priceless”.60.Well established among segments of the middle and upper classes by the mid-1800s,this new view of childhood spread throughout society in the late nineteenth and early twentieth centuries as reformers introduced child labor regulations and compulsory education laws predicted in part on the assumption that a childs emotional value made child labor taboo.61.Of course,it would be as dangerous to overreact to history by concluding that the majority must now be wrong about expansion as it would be to re-enact the response that greeted the suggestion that the continents had drifted.62.While the fact of this consumer revolution is hardly in doubt,three key questions remain:who were the consumers?What were their motives?And what were the effect of the new demand for luxuries?63.Although it has been possible to infer from the goods and services actually produced what manufacturers and servicing trades thought their customers wanted,only a study of relevant personal documents written by actual consumers will provide a precise picture of who wanted what.64.With respect to their reasons for immigrating,Grassy does not deny their frequently noted fact that some of the immigrants of the 1630s,most notably the organizers and clergy,advanced religious explanations for departure,but he finds that such explanations usually assumed primacy only in retrospect.65.If we take the age-and sex-specific unemployment rates that existed in 1956(when the overall unemployment rate was 4.1 percent)and weight them by the age-and sex-specific shares of the labor force that prevail currently,the overall unemployment rate becomes 5 percent.66.He was puzzled that I did not want what was obviously a“step up toward what all Americans are taught to want when they grow up:money and power.67.Unless productivity growth is unexpectedly large,however,the expansion of real output must eventually begin to slow down to the economys larger run growth potential if generalized demand pressures on prices are to be avoided.68.However,when investment flows primarily in one direction,as it generally does from industrial to developing countries,the seemingly reciprocal source-based restrictions produce revenue sacrifices primarily by the state receiving most of the foreign investment and producing most of the incomenamely,the developing country partner.69.The pursuit of private interests with as little interference as possible from government was seen as the road to human happiness and progress rather than the public obligation and involvement in the collective community that emphasized by the Greeks.70.The defense lawyer relied on long-standing principles go