英语四级CET-4考试网,英语四级CET-4考试考生的精神家园。祝大家英语四级CET-4考试成功 梦想成真!
网站公告 |
您现在的位置: 教育频道-新都网 >> 英语四级CET-4 >> 阅读理解 >> 强化训练 >> 正文

2020年上半年英语四级阅读理解习题41

作者:佚名    文章来源:文都网    点击数:    更新时间:2020/6/23
根据历年大学英语四级考试的经验来看,横向对比四级考试试卷的四大组成部分(写作、听力、阅读和翻译)之后不难发现,无论是考试中心所建议的时间分配比还是各部分的分值占比,阅读都举足轻重。今天四六级网和大家分享2020年上半年英语四级阅读理解习题41,希望对您有所帮助。
    Who Knows
    Since no one knows what scientific discoveries will be made between now and the year A. D. 2000, each of us can make his own predictions.
    Our prophecies (预言) need not be completely wild guesses. We know science has moved forward rapidly in the past 50 years and will continue to do so. If we allow our imaginations to be guided by known research, our prophecies need not be sheer fantasy. We don't have to go so far as to predict that there will be invasion by men from Mars, or that all food and nourishment will be taken in capsule form, or that mechanical men will roam the world.
    With the scientific information that we have available now, let's make an estimate of progress in air travel. It is likely that within 50 years we shall travel through the air at a speed of 10,000 miles per hour. Too fast? Not at all. Jet-propelled planes can now travel at least 1,000 miles an hour, and jet planes will be outmoded(过时的) shortly by guided missiles. The X-15 rocket's speed in 1961 was 3,690 miles per hour, and scientists are hoping to double and even triple this speed. They will accomplish this speed-up, because there is no apparent scientific obstacle to prevent it.
    Some day, certain aerodynamic(空气动力学的) problems will be overcome and missiles will be enlarged to carry at least 25 passengers. When scientists have solved all the problems of constructing and increasing the speed of apparatus-carrying missiles, their skill will lead them to the next step—missiles for interplanetary flight. This prediction is a scientific possibility in the near future.
    Flights into outer space began when Sputnik I was launched in 1957, and man first went into space in 1961. During the late 1950's and early 1960's many satellites—man-made astral bodies—orbited the earth and moon. Satellites, which will be controlled by men on earth, may have many beneficial uses. Perhaps scientists will discover a source of energy 100 miles above the earth. This energy could be transmitted to us as a source of power for manufacturing plants or even for our cook stoves. Or one of these missiles might serve as the medium for transmitting communications across the globe. Telephonic
    communications might be carried on by beaming waves at the missile, which would in turn beam waves at a telephone halfway across the world. The missile might be the telephonic connection, for example, between you in New York, and a friend in Bangkok.
    Such a satellite might also be used as the transmitting medium for interna-tional television broadcasts. Programs being telecast from a Paris studio could then be seen simultaneously in every other country. This immediate international transmission will surely be a development before the turn of a new century.
    We may expect to order our clothing, groceries,and other household goods
    by television-phone. We prophesy that within twenty five years, our telephones will be equipped with television screens so that we can see the person at the other end of the line.
    Other fields of science have also made gigantic (巨大的 ) strides in progress. Medicine had operated so efficiently in the past half-century that many diseases have been nearly wiped out. And more will join this disappearing group of diseases. Diabetes and polio are under control. We can hope and expect that cancer will be conquered. Certain skin diseases, like psoriasis and eczema, which are exceedingly common though not fatal, will be eradicated(消灭). The victims of annoying diseases will lead pleasanter lives.
    Even the healthy will benefit from the advances in medicine. Life expectancy already had been lengthened and scientists know that the time is coining rapidly when the person one hundred years old will not be a phenomenon.
    Even if the birth rate should remain at its present level, the population will be larger as people stay alive longer. Realizing that the increase of population will Strain natural resources, scientists of all kinds are experimenting with methods for extending these resources.
    One matter of immediate urgency will be our source of food. The larger the population, the greater will be the demand for food. Our arable适合工作的) land is already taxed to capacity. Scientists will have to find a way to mass-produce food by hydroponics—the science of growing vegetables, or other plants, in water—or by irrigating desert wasteland.
    This increased demand for food will create an increased demand for water. Certain parts of the United States—Nevada, New Mexico, and Arizona, for example—have been in desperate need of water for a long time. Periodically, the citizens of New York have been water-rationed because droughts have seriously threatened the water supply in the reservoirs which provide the millions of gallons a day needed in the largest city in the world.
    Scientists will solve the water problems of the desert and metropolitan areas. Rain-makers will have perfected a simple method, now in the elementary stages of experimentation, for making clouds release their moisture so that the right amount of rain is produced to keep reservoirs at the correct level at all times of the year.
    Another method of water production will be the purification of salt water taken from oceans. When a simple, cheap method has been worked out for converting seawater into pure water suitable for use in the household and the manufacturing plant, other scientist-engineers will contribute practical mechanical equipment for piping the water from seashore to desert areas.
    Other improvements of the future will touch our lives more closely. It is possible, for example, to imagine that cities of the future will have underground networks of conveyor belts which would supplement subways and make it possible for people to hop on a rapid conveyor system, sit in a little booth, and shuttle a couple of blocks in safety.
    Of even more immediate interest than transportation is the clothing of the future. The clothes you will wear at the end of this century may not be of silk, cotton, wool, or even nylon. Clothing will be made of new synthetics and so will the upholstery(家具装饰材料) materials you order by television-phone. To get these synthetic materials, scientists will have devised some electrically controlled apparatus which will allow men to dig twenty miles below the surface of the ground. At that level inside the earth, they may discover many types of rock, now unknown, which will give us these new synthetic materials. Cloth made from these materials will be fire-proof because they come from rock.
    While these synthetics for cloth are being developed, others will be discovered to take the place of wood and steel. We already have plastic furniture, plastic boats, and plastic dishes. As our wood and steel supplies dwindle (减少 ), synthetic materials will be developed for building homes and giant skyscrapers.
    1. According to the reading selection, the world in the year 2000 will achieve great progress in many fields.
    2. According to the writer, our predictions about the future should be based on our free imaginations.
    3. Synthetics in place of silk, cotton and wool will be made from rocks.
    4. Based on available scientific information, it is predicted in this passage that the speed of air travel 50 years from now will reach 10,000 kilometres an hour.
    5. Paragraph 8 mainly tells us that many diseases will be cured or under control in the future thanks to the advances in medicine.
    6. To meet the increasing demand for food, scientists have found a way to mass-produce food by irrigating desert wasteland.
    7. Underground networks of conveyor belts will be more convenient and more widely used than subways.
    8. The way to grow vegetables, or other plants, in water is called______.
    9. The water problems can be solved by producing rain and______.
    10. One of satellites' beneficial uses is to work as the medium for______.
    参考答案:
    1. Y 2. N 3. Y 4. N 5. Y 6. N 7. N
    8. hydroponics 9. purifying sea water 10. transmitting communications across the globe
    

(责任编辑:admin)


查看更多关于2020年上半年英语四级阅读理解习题41的文章
没有相关文章
快速导航
培训信息
特别说明
    由于各方面情况的不断调整与变化,新都教育所提供的招生和考试信息仅供参考,敬请考生以权威部门公布的正式信息为准。
版权声明
    凡本网注明“来源:新都教育”的所有作品,版权均属于新都网,未经本网授权不得转载、摘编或利用其它方式使用上述作品。已经本网授权使用作品的,应在授权范围内使用,并注明“来源:新都教育”。违反上述声明者,本网将追究其相关法律责任。
  凡本网注明“来源:XXXXX(非新都教育)”的作品,均转载自其它媒体,转载目的在于传递更多信息,并不代表本网赞同其观点和对其真实性负责。
  如作品内容、版权等存在问题,请在两周内同本网联系,联系邮箱:newdu2004@tom.com
  本网欢迎原创作品投稿,投稿邮箱:newdu2004@tom.com
  • 英语四级CET-4栏目导航
  • 资讯
    考试动态
    报考指南
    政策大纲
    听力
    听力指导
    历年真题
    强化训练
    口语
    词汇及语法
    语法指导
    词汇指导
    强化训练
    阅读理解
    阅读指导
    强化训练
    拓展阅读
    写作
    写作指导
    写作范文
    强化训练
    完形填空
    完型指导
    强化训练
    英语翻译
    翻译指导
    强化训练
    真题及模拟题
    模拟试题
    历年真题
    备考经验
    考试心情
    技巧心得
    综合辅导
    综合辅导
    综合辅导
    真题解读
    专家访谈
    英语四级CET-4网为英语四级考试考生提供听力、口语、词汇、语法、阅读理解、英语写作、完型填空、翻译、短文改错、真题、模拟题等英语四级考试辅导资料免费阅读及下载。
    Copyright © 2004-2009 Newdu.com All Rights Reserved 京ICP备09058993号
    本站为非经营性网站,收藏资料纯属个人爱好,若有问题请联系管理员:newdu2004@tom.com