公共英语四级阅读题型练习辅导

公共英语四级阅读题型练习辅导

A happy heart makes a blooming visage.以下是为大家搜索整理的公共英语四级阅读题型练习辅导，希望能给大家带来帮助!

公共英语四级阅读题型练习辅导1

The General Hou Effect

The green hou effect is not a new phenomenon. Scientists have known for centuries that a layer of gas naturally surrounds the earth like an insulating blanket, trapping the reflected energy of the sun and preventing it from escaping into space that is what makes the earth warm enough for people, plants and animals. However, recent human activity has boosted concentrations of greenhou gas and enhanced their heat-trapping ability. The man culprit is carbon dioxide which scientists estimate accounts for nearly half of global warming.Co2 is relead from burning fossil fuels and from clearing and burning forests.

There are other important greenhou gas too and they cannot be ignored. CFCs, for example, may account for 25 per cent of global warming in the text century if their production is not scaled back. But carbon dioxide is妈妈的英语怎么读 the pivotal one. The UN International panel on Climatic Change now says that Co2 levels could double within in 40 years if prent rates of fossil-fuel burning and deforestation continue. That means an average temperature increa between two and four degrees centigrade and a a-level ri of perhaps a foot by 2050.

No one knows for certain how local weather will change as a result of this warming. But one thing is clear-it will be no picnic. Indications are that the earth will be take place not over thousands of years, but over decades. And it is the speed of the change, which makes the preci impact so difficult to predict.

The most sophisticated computerized climate models in the US and UK , agree that weather around the world will become more irregular and more extreme. In general, temperatures will become more towards the poles than at the equator. overall rainfall will also increa as higher temperatures boost evaporation from the as. But the distribution of precipitation will shift. Some areas will become wetter, others will be drier. In middle latitudes, Climate zones will march poles-wards. In tropical and subtropical parts of the third would, warming will be less but the impact on a relatively stable climate will be greater.

Global warming will also cau ocean levels to ri---though not, as popul中国公认第一帅哥ar wisdom has it, due to the Antarctic ice cap melting. If this catastrophe occurs it will not be for at least another century. Instead, a levels will ri simply becau water expands as it warms. people living in low-lying coastal regions will be in danger. The world’s great river deltas, home to millions in Asia and Latin America and containing some of the Third World’s richest food-growing land, could become brackish graveyards.

6. Which gas is the most responsible for global warmi电话技术支持ng?

A. Carbon Dioxide.

B. CFCs.

C. Green hous.

D. other gas in the atmosphere.

7. What will happen if man continues to burn fossil fuels and forests at prent rates?

A. All fossil fuels, like coal, oil and gas, will run out.

B. Deforestation will give ri to the loss of co2.

C. The temperature will increa two to four degrees Fahrenheit.

D. The ri of a-level will reach about a foot by 2050.

8. Why is the preci impact the global warming will exert on local weather hard to predict?

A. Becau the great changes in temperature will take place in just decades.

B. Becau the cour of changes will last thousands of years.

C. Becau people are not sure whether the earth will be warmer than before.

D. Becau there are many other factors involved in this change.

9. Which of the following is true according to the passage?

A. The earth, as a whole, will become much wetter.

B. The temperature around equator will ri more than around the poles.

C. The amount of rainfall will be the same from place to place.

D. The weather around the world will be more unusual in the next few decades.

10. It can be concluded that

A. The ri of ocean levels is due to the Antarctic ice cap melting.

B. The temperature increa will take a gradual cour.

C. Human beings will have to suffer more from environmental damage.

D. Without greenhou gas the earth would be extremely hot.

参考答案

6.A

第一段有这样一句话：the main culprit is carbon dioxide, which scientists estimate accounts for nearly half of global warming 从这句话可以看出，二氧化碳是全球变暖的罪魁祸首，对全球变暖负有重大责任。

7.D

联合国的环境变化国际小组告诉我们：如果仍以目前的速度使用燃料并滥伐森林，到2005年，地球温度将会上升2-4摄氏度，海平面也将上升一英尺。所以C是错误的。A文章没有提到燃料是否会用尽。B 滥伐森林不但不会使二氧化碳减少，反而会使二氧化碳越来越多。

8.A

第三段最后一句话告诉我们这道题的正确答案。It is the speed of the change, which makes the preci impact so difficult to predict.地球的温度在十年间就升高了，变化发生的速度如此之快，使人很难预测到地球变暖对当地气候的影响。

9.D

文章的第四段指出：在美国和英国有一个非常复杂的计算机化模型，这一模型得出了世界气候越来越变化无常、越来越不规律这一结论。A一些地方会更加湿润，一些地方会更加干燥，而不是选项中所说的地球整体上会变的更加湿润。B温度在两极的增长幅度大于在赤道的增长幅度， 而不是赤道的温度增长幅度大于两极的增长幅度。C 雨量分布将发生变化，而不是选项中所说的各地的降水量相同。

10.C

文章的末尾告诉我们：环境的污染引起的全球变暖、海平面上升、气候异常以及雨量分布不均，暗恋的诗句最终给人类带来更多的不幸。A 海平面的上升并不像人们认为的那样是由于南极冰层融化引起的。

Translation

11. Global warming could disrupt the ability of a large portion of the world’s oceans to absorb carbon dioxide from the atmosphere, tting off a vicious cycle in which the earth gets even hotter, rearchers said.

(t off使爆炸,出发; vicious adj.恶的, 堕落的;rearchers said注意翻译顺序)

12. The waters around Antarctica make up 10 percent of the world’s oceans and play a significant role in soaking up carbon dioxide, a greenhou gas en as one of the main caus of global warming.

(Waters水域;soak up 吸收;注意过去分词短语的翻译)

13. Since carbon dioxide contributes to global warming, scientists believe a growing build-up of the gas would make the environmental problem increasingly wor.

(contribute to起作用，有助于)

14. If global warming continues with incread precipitation in the Southern ocean, there will be more stratification and that will favor diatoms.

(precipitation n.仓促; stratification n.层化, 成层,; diatom n.硅藻属)

15. The study, which took place during a month -long expedition during the Antarctic summer, was also one of the first to show that some types of algae absorb carbon dioxide better than others.

(expedition n.远征, 探险队; algae n.藻类, 海藻)

句子翻译：

11.研究人员表示，全球性的气候变暖可能破坏世界上大部分海洋从大气中吸收二氧化碳的能力，从而引起恶性循环，使地球的气候更加炎热。

12.南极洲周围的这片水域占地球海洋面积的百分之十，在吸收二氧化碳方面起着非常重要的'作用。而二氧化碳被认为是引起温室效应的气体，是导致全球气温升高的主要原因之一。

13.科学家认为：既然是二氧化碳引起了全球气候变暖，那么二氧化碳的不断积累会环境状况进一步恶化。

14.如果全球气候继续变暖，南大洋州的沉淀反应继续增加，海水的层次就将更多。这样手上蜕皮有利于硅藻的生长。

15.这项为期一个月的科学考察活动是在南极洲的夏季进行的，也是首批发现某些种类的海藻比其它海藻具有更强的吸收二氧化碳的能力的研究工作之一。

公共英语四级阅读题型练习辅导2

Part D

Read the following text carefully and then translate the underlined gments into Chine.Your translation should be written clearly on ANSWER SHEET.

56) Fathers expod to poisonous substances are probably just as likely to be the cau of defects in their unborn infants as mothers. Yet it is women who are told to stop drinking and smoking and to look after their health when they are pregnant. And it is women who find that they are banned from jobs where they are expod to harmful chemicals or radiation.57) Despite a growing body of scientific evidence that a man s exposure to damaging substances can. affect his offspring, pregnant women are still charged with the responsibility of keeping their infants healthy, said Gladys Friedler, of the Boston university School of Medicine. "This is puzzling", she said. "Most of the workforce is still male, so why do we still spend so much time looking at women? The health 氨基酸结构式of men as well as women should be of concern. "

In the US,2,500,000 children are born with birth defects each year. In 60 percent of cas the origin of the defect is not known.58) The figures do not include less obvious problems that appear later in development, such as biochemical malfunctions and behavioral problems.

Many rearchers still em reluctant to contemplate that a man s environment can influence the health of children. "If the effects had not been so obvious, we might 兵之魂still be reluctant to acknowledge the effect of environmental agents on women. " Despite this, there is a reluctance to accept the accumulated evidence of men s effects on development, she said.59) Some companies have already taken steps to "protect the unborn child" by excluding women from jobs where they teps to "protect the unborn child" by excluding women from jobs where they might be expod to dangerous substances. This has led to some bitter disputes between the women and their employers in the US. The most famous ca, now before the Supreme Court, pits a group of women and their union against Johnson Controls, a company which makes batteries.60) The company transferred women from higher-paying jobs where they were expod to lead on the grounds that it had to prot着意的拼音ect unborn children. The irony is that children born to me

公共英语四级阅读题型练习辅导3

Read the following text. Choo the best word or phra marked A,B,C or D for each numbered blank.

Nearly three-quarters of the earth is covered with water. Water heats up more slowly than land, but once it has become warm, it takes longer to_1_down. If the earth’s surface were entirely land, the temperature at night would_2_quite quickly and night would become cooler than the day, as it is on the moon. This does_3_happen in inland derts, the temperate_4_, is very much affected by the oceans around them. The areas clo to the a have a “maritime climate”, _5_rather cool summers and warm winters. The interiors, far from the a, have a_6_climate with extremely hot summers and cold winters.

Rain_7_from the evaporation of rivers如愿以偿造句, as and lakes. Even after heavy rain the pavements in the city do not take long to dry_8_the rainwater evaporates into the air. on a warm dry day it evaporates very rapidly, _9_warm air can absorb more moisture than cold air. But at any particular temperature, the_10_can hold only a certain maximum amount of water vapor. The air is then saturated like a sponge that can not hold_11_more water. The lower the temperature, the_12_ water vapor is required to saturate the air.

All over the surface of the earth, millions of tons of water are_13_every cond, condensing in the air into drops so small_14_it takes thousands of them to make a single raindrop. It is the_15_ droplets that make clouds. When clouds roll in from the a over the warmer land, they are forced to_16_and become cooler in the colder atmosphere. As the air cools sown, it may pass through its saturation point and_17_some of its water vapor turns to rain. Day in , day out,the_18_water circulates between the air and the land:rivers_19_to make clouds, clouds make rain, rain makes rivers which in turn run into the a. This is called the rain_20_.

1.A.cool B.balance C.keep D.conden

2.A.ri B.loo C.miss D.fall

3.A.indeed B.not C. however D.ust

4.A.centers B.moisture C. fields D.zones

5.A.with B.instead of C. within D.owing to

6.A.maritime B.continental C.conventional D.normal

7.A.evaporates B.result Ces D.restrains

8.A.though B.becau C.while D.so that

9.A.where B.now that C.as D.as long as

10.A.climate B.atmosphere C.weather D.rivers

11.A.no B.some C.any D.much

12.A.more B.less C.fewer D.greater

13.A.heating up B.flowing C. evaporating D.moving

14.A.for B.that C.then D.yet

15.A.big B.enough C.tiny D.circulating

16.A.rai B.drop C.be cold D.ri

17.A.then B.already C.merely D.soon

18.A.running B.vapor C.evaporated D.same

19.A.evaporate B.try C.cool D.tend

20.A.saturation B.effect D.system D.cycle

公共英语四级阅读题型练习辅导4

Piano

The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries —— the spinet, the dulcimer, and the virginal. In the venteenth century the organ, the clavichord, and the harpsichord became the chief instruments of the keyboard group, a supremacy they maintained until the piano supplanted them at the end of the eighteenth century. The clavichord's tone was metallic and never powerful; nevertheless, becau of the variety of tone possible to it, many compors found the clavichord a sympathetic instrument for intimate chamber music. The harpsichord with its bright, vigorous tone was the favorite instrument for supporting the bass of the small orchestra of the period and for concert u, but the character of the tone could not be varied save by mechanical or structural devices.

The piano was perfected in the early eighteenth century by a harpsichord maker in Italy(though musicologists point out veral previous instances of the instrument). This instrument was called a piano e forte (soft and loud), to indicate its dynamic versatility; its string守宰s were struck by a recoiling hammer with a felt-padded head. The wires were much heavier in the earlier instruments. A ries of mechanical improvements continuing well into the nineteenth century, including the introduction of pedals to sustain tone or to soften it, the perfection of a metal frame, and steel wire of the finest quality, finally produced an instrument capable of myriad tonal effects from the most delicate harmonies to an almost orchestral fullness of sound, from a liquid, singing tone to a sharp, percussive brilliance.

钢琴

钢琴的家系可以追溯至 15 至 16 世纪早期的键盘乐器，包括小型拨弦琴、洋琴和维金娜琴。17 世纪时风琴、敲弦琴和拨弦琴成为键盘乐器类的主要成员。这种至高无上的地位一直为它们所保持，直到 18 世纪末期钢琴将它们取代。

敲弦古钢琴的音调有金属的音质，缺乏雄劲。然而由于它的音调变化多，许多作曲家发现对于亲切的室内乐是一种得体的乐器。人们最喜欢用具备明快有力音调的拨弦古钢琴来配合当时小型管弦乐团的低音乐器以 及在演奏会上演奏。但它的音调难以变化，除非使用机械或构件装置。18 世纪早期的意大利，钢琴在一位拨琴钢琴制造者手中得到完善(尽管音乐理论家们指出有更早的例子)。这种乐器被称为 piano eforte (意大利语，柔和而响亮的)，以显示它有力的多样性。演奏者用 一个头部带皮毡的弹击乐锤敲击琴弦。更早的这种乐器之上的金属丝要重得多。从此，持续到 19 世纪的一系列机械上的改进，包括引入踏板以维持音调或使其柔和，改善金属框架，以及使用最佳性能的钢丝，最终产生了一种具备无数音调效果的乐器。这些效果涵盖了从最精致的和声到几乎全部的管弦乐音响，从明快流畅的吟唱的音调到尖锐的打击乐器的清晰动人的恢宏气势。