（外语类考证）英语四级单选题练习5

1、英语四级单选题练习51、 Section B Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished sentences. For each of them there are four choices marked A), B), C) and D). You should decide on the best choice. Passage One Questions 21 to 25 are based on the followi

2、ng passage. There are more than 2,000 different kinds of mosquitoes. Female mosquitoes bite people to drink their blood. Male mosquitoes do not drink blood. They drink fluids from plants. The female mosquito uses its thin sucking tube to break the skin, find blood and inject the victim with a substa

3、nce that keeps blood flowing. The female mosquito drinks the blood and uses it to produce as many as 250 eggs. The insect leaves the eggs in any standing water. The eggs produce worm-like creatures called larvae (幼虫) in two days to a few months. However, some eggs can stay in water for years until c

4、onditions are right for development. The larvae feed on organisms in the water. After four to ten days, they change again, into creatures called pupas (蛹). The pupas rise to the surface of the water. Adult mosquitoes pull themselves out of the pupas and fly away. The World Health Organization (WHO)

5、says mosquitoes carry organisms that cause disease and death for millions of people throughout the world. The most important disease spread by mosquitoes is malaria (疟疾). The WHO says 247 million people became infected with malaria in 2006. Malaria caused almost one million deaths, mostly among chil

6、dren in Africa. The disease is found in more than one hundred countries in Africa, Asia, the western Pacific Ocean, the Middle East and Central and South America. Malaria parasites (寄生虫) enter a persons blood through a mosquito bite. These organisms travel to the liver. They grow and divide there. A

7、fter a week or two, the parasites invade red blood cells and reproduce thousands of times. They cause the persons body temperature to rise. They also may destroy major organs. People with malaria may suffer kidney failure or loss of red blood cells. Some medicines are generally effective in preventi

8、ng and treating malaria. They are designed to prevent the parasites from developing in the body. People die from malaria because they are not treated for the disease or the treatment is delayed. 第22题：According to the passage, we can infer that _.A) female mosquitoes dont bite animalsB) female mosqui

9、toes bite people for a substance that keeps blood flowingC) malaria is found everywhere in the worldD) countries in Europe and North America have low malaria death rate2、 【C18】AwhichBthatCwhatDhow3、Section BDirections: In this section, you will hear 3 short passages. At the end of each passage, you

10、will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.听力原文： More than three-million people died of AIDS last year. The estimate is that five-million others became in

11、fected with H. I. V. , the virus that causes the disease. Right now, researchers say around forty-million people are living with the virus. The United Nations says there could be forty-five million new cases by 2010. Public health experts say the media have a central part to play in the fight agains

12、t AIDS. They point to drama series on television and radio in a number of countries. In Ivory Coast, for example, the weekly show AIDS in the City has been on television since 1994. The program tells stories with actors in an effort to educate people about AIDS. Researchers say about two-thirds of p

13、eople in South Africa watch the show Soul City. A show created with BBC help has become one of Indias most-watched dramas. In Detective Vijay, the main hero is a policeman with H. I. V. A United Nations report says the program appears to be educating people. The report says eighty-five percent of th

14、ose questioned had learned something new about AIDS from the show. In China, millions watch a daily program called Ordinary People. A non-profit group based in the United States helped create this drama show about social issues. The group assists governments, local groups, and radio and television s

15、tations to develop media campaigns. The group supports what it calls the magic of entertainment for social change.26. How many people have died of AIDS during the past year according to the passage?27.What do public health experts believe according to the passage?28.What is Detective Vijay ?(27)A.Fo

16、rty million people.B.Forty-five million people.C.Over three million people.D.Five million people.4、 【C17】A.classifiedB.viewedC.reachedD.observed5、 In many homes the symbol of the spirit of Christmas is _.A.the Christmas treeB.the Christmas songC.the Christmas cardD.the Christmas present6、 【C14】Ahapp

17、enedBwould happenChappensDhappen7、 【C8】A.unfastenedB.untouchedC.fastenedD.tied8、 According to the author, the various conflicting views of education _.A.add complexity and richness to the professionB.demonstrate the fallacies of the economic approachC.prevent progression towards the economic aimD.en

18、sure that one particular philosophy is not overly dominant9、 Why did Coffman request an investigation?A.To see if there was a deliberate cover-up of the problem.B.To find out the extent of the consequences of the case.C.To make sure that the school principals were innocent.D.To stop the voters appro

19、ving the $212 million bond issue.10、(24)AShow his student ID and pay ten dollars.BUse his international drivers license.CTake a drivers test and apply for a limited license.DShow proof of temporary residence.11、听力原文： We are now living in a world in which robots are taking over much of the work.Robot

20、s make our cars, fly our planes and work out wages. But these robots are not mechanical men and women.They do not look like us.They are machines specially built to do some of the things that human beings can. Although they may not look like us,robots need some human features in order to be able to d

21、o human work.First of all they need some kind of brain.Their brain is a computer,which has a memory to human member instructions and ability to control other equipment.Another essential feature of many robots is an arm that can do the kind of things that human beings can with their arms.One-armed ro

22、bots are now coming into widespread use in industry.They are being used,for example,on car assembly lines. The great advantage of robots over human workers is that they can work non-stop for long periods. They never get tired,and always work with the same accuracy.They can also work in conditions th

23、at humans could not bear.Last but not least,as more robots are built,their cost will come down. Although robots are rapidly taking over many jobs in industry, they seem a long way from taking over in the home. The problem is that it would take a very complex and costly robot to perform. half the tas

24、ks involved in housework. According to the speaker,what can the present-day robots do?A.Drive cars.B.Fly planes.C.Pay wages.D.Repair machines.12、(25)A.By looking through the keyhole.B.By looking through the window.C.By taking pictures of the monkey.D.By hiding himself behind the box.13、(79)A.intensi

25、veB.insincereC.conclusiveD.complicated14、 According to the passage, why is bottled water so popular?A.It is much cheaper than wine.B.It is considered healthier.C.It appeals to more cultivated people.D.It is more widely promoted in the market.15、 【C3】A.goB.continueC.comeD.arrive16、 【B16】A.opportunityB.carelessnessC.accidentD.hand17、 【C17】A.distractingB.retractingC.cont