[外语类试卷]大学英语四级模拟试卷247及答案与解析.doc

《[外语类试卷]大学英语四级模拟试卷247及答案与解析.doc》由会员分享，可在线阅读，更多相关《[外语类试卷]大学英语四级模拟试卷247及答案与解析.doc（37页珍藏版）》请在麦多课文档分享上搜索。

1、大学英语四级模拟试卷 247及答案与解析 一、 Part I Writing (30 minutes) 1 For this part, you are allowed 30 minutes to write a composition entitled People are Enjoying a Richer Life. You should write at least 120 words following the outline given below: 二、 Part II Reading Comprehension (Skimming and Scanning) (15 minut

2、es) Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions attached to the passage. For questions 1-7, mark： Y (for YES) if the statement agrees with the information given in the passage; N (for NO) if the statement contradicts the information give

3、n in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 1 The Dog The dog is one of the most popular pets in the world. It ordinarily remains loyal to a considerate master, and because of this the dog has been called mans best friend. Class distinctions between people ha

4、ve no part in a dogs life. It can be a faithful companion to either the rich or the poor. Mans Best Friend Dogs have been domesticated for most of human history and have thus endeared themselves to many over the years. Stories have been told about brave dogs that served admirably in war or that risk

5、ed their lives to save persons in danger. When Pompei-the Roman community destroyed by Mount Vesuvius in A.D. 79-was finally excavated (挖掘 ), searchers found evidence of a dog lying across a child, apparently trying to protect the youngster. Perhaps few of the millions of dogs in the world may be so

6、 heroic, but they are still a source of genuine delight to their owners. A dog fits easily into family life. It thrives on praise and affection. When a master tells a dog that it is good, the animal happily wags its tail. But when a master scolds a dog, it skulks (躲闪 ) away with a sheepish look and

7、with its tail tucked between its legs. People in the city as well as those in other areas can enjoy a dog. Medium size or small dogs are best suited for the confines of the city. Large dogs need considerable exercise over a large area. Dogs are not always well thought of, however. In recent years do

8、gs in the city have been in the center of controversy. Some people have criticized dog owners for allowing their pets to soil sidewalks and lawns, although in some cities laws oblige owners to walk their dogs along street curbs. In turn, dog owners have argued that the animals serve as protection ag

9、ainst vandals (故意破坏者 )and burglars and thus protect their detractors as well as their owners. When a person, it will bite in its own defense. The Dog Family The wild ancestors of all dogs were hunters. Wolves and other wild relatives of the dog still hunt in packs for their food. Dogs have retained

10、the urge to be with the pack. This is why they do not like to be left alone for long. Some breeds of dogs still retain the hunting instinct. Dogs exist in a wide range of sizes, colors, and temperaments. Some, such as the Doberman pinscher and the German shepherd, serve as alert and aggressive watch

11、dogs. Others, such as the beagle and the cocker spaniel, are playful family pets, even though they were bred for hunting. Still others, such as the collie and the Welsh corgi, can herd farm or range animals. Each of the dogs just mentioned is a purebred. A mongrel dog, however-one with many breeds i

12、n its background can just as easily fit into family life. Dogs have been with humans since prehistoric times. Over the years they have performed various services. They have pulled sleds over snowy tracts. They have delivered messages, herded sheep and cattle, and even rescued persons trapped in the

13、snow. Dogs have served as a source of food, too. The ancient Romans are said to have prized certain kinds of dog stew. The Aztecs of ancient Mexico raised tiny dogs, thought to be the forebears of the Chihuahua, to feed the large carnivores (食肉动物 ) in the private zoos of the Aztec rulers. In the pas

14、t dogs have even been worshiped as gods. Recently, they have been used in drug research, medical experimentation, and space science. Soviet scientists launched dogs into space to test the ability of mammals to survive the harshness of space travel before people were sent up. Dog Training Dogs are tr

15、ained as guard dogs in peacetime by the United States Army and other military services. Because of their keen sense of smell, dogs are used by police at times to track down escaped prisoners. Law enforcement agencies also rely on the dog s acute sense of smell to uncover illegal drugs. And specially

16、 trained dogs serve as the “eyes“ of the blind, guiding the steps of their sightless masters around obstacles and hazards. Any young dog can be trained to understand commands and to do simple tricks. When correctly trained, it is conditioned to respond to your commands, noises, or gestures. Once an

17、owner decides to train his puppy, however, he must be willing to stick with the job until the puppy learns the task. First, the owner should select a simple “call“ name for the animal. The call name should be used frequently so the puppy can learn to recognize the sound of it. A training session is

18、best begun when the puppy is hungry because it is more alert at that time. Also, the owner can reinforce the dog s correct responses to commands with a dog biscuit or meat tidbit (美哧食品 ). The hungry dog is more apt to associate the correct performance of a task with a food reward. To get the puppy i

19、nto a collar at first, entice (引诱 ) it to you by extending your open hands, pet it and say “good dog“ (and include its name) when it comes, and finally slip the collar around its neck. Then attach a leash to the collar. If the puppy has confidence Jn you, it will walk along with you even though it i

20、s wearing the leash. A metal chain leash is usually best because the puppy will not be able to chew and play with it. Wait until a puppy is at least six months old before trying to teach it tricks, but do teach it the meaning of “no“ at an earlier age. The young dog must be corrected vocally each ti

21、me it does something that you disapprove of. If you are consistent, it soon learns by your tone of voice what pleases you and what displeases you. Formal training sessions should entail no more than ten minutes of work at a time, and they should never tire the dog. To teach the command “sit“, keep t

22、he dog on your left side and pull up on its leash with your right hand while gently but firmly pushing its hindquarters to the floor. While doing this, say the command “sit“ with authority. Reinforce its correct actions with a tidbit. To teach the command “stay“, work with the puppy after it has lea

23、rned to sit. While it is sitting, raise your palm to the dog and order it to “stay“. It will probably try to get up, so tell it “no“. Whenever it remains in the sitting position after you have given the “stay“ command, reward the dog with a tidbit. More effort might be needed to teach the command “c

24、ome“. When the dog has learned to stay, command it to “come“ and call it by name. When it comes to you, lavish the dog with praise and give it a snack. A very stubborn dog might have to be pulled with a cord tied around its collar while the command is given. If this is necessary, be firm but accompa

25、ny the command with a friendly hand gesture. Many tugs may be necessary until the reluctant dog learns the meaning of “come“. Do not be impatient with a puppy when teaching it simple tricks, and never get angry. If the training sessions are not going well, break them off and resume them later in the

26、 day or even on another day. In addition, give praise and tidbits to the dog only when they are earned. 2 A dog is faithful to its owners regardless of his or her class distinctions. （ A） Y （ B） N （ C） NG 3 Because of their loyalty to their owners, the dogs have been popular with all people in recen

27、t years. （ A） Y （ B） N （ C） NG 4 Although many dogs are kept alone, they prefer to stay within a group of dogs. （ A） Y （ B） N （ C） NG 5 Dogs are able to help human beings by taking care of children. （ A） Y （ B） N （ C） NG 6 The best time for a training session to begin is when the dog is somewhat hun

28、gry because the trainer can use food to tempt the dog to follow his command. （ A） Y （ B） N （ C） NG 7 The dog owners should teach their dogs the meaning of “no“ at an early age with a hand gesture. （ A） Y （ B） N （ C） NG 8 When the training sessions do not go well, the trainers should be firm and give

29、 the command more strictly. （ A） Y （ B） N （ C） NG 9 _dogs are best choice in the city because they require less space. 10 Police uses dogs to track down escaped prisoners because of dogs_. 11 While a dog is trained, to train _requires the most effort. Section A Directions: In this section, you will

30、hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices

31、 marked A, B, C and D, and decide which is the best answer. （ A） At work. （ B） At a bank. （ C） At a restaurant. （ D） At an apartment building. （ A） The shape is wrong. （ B） Its too small for her hat. （ C） The bus company doesnt want it. （ D） If it can go into the rack. （ A） They have been working at

32、 the telescope for two days. （ B） They cant find the microscope. （ C） Theyve been working in the laboratory for two hours. （ D） They cant fix the microphone. （ A） She has not bought him a gift yet. （ B） She bought him a book. （ C） She bought him a case for his coin collection. （ D） She bought him a

33、watch. （ A） Tuesday. （ B） Wednesday. （ C） Thursday. （ D） Friday. （ A） Herself. （ B） Mabel Anderson. （ C） The man. （ D） Marty. （ A） $ 300. （ B） $ 200. （ C） $500.00 （ D） $450.00 （ A） That Sue already knows about the party. （ B） That Alien doesnt know Sue. （ C） That Alien will probably tell Sue about t

34、he party. （ D） That Alien wont tell Sue about the party. （ A） She is shy when speaking in front of people. （ B） She forgot to prepare the class. （ C） She made a serious mistake in front of people. （ D） She forgot to give a presentation. （ A） He looks like children. （ B） He feels very nervous when so

35、mebody is waiting for him. （ C） He likes history very much. （ D） He blushes frequently. （ A） A common habit. （ B） A common behavior. （ C） A learned behavior. （ D） A learned habit. （ A） In Britain. （ B） In Italy. （ C） In Denmark. （ D） In Europe. （ A） How many men do the housework. （ B） Who does the h

36、ousework at home. （ C） How many women do the housework. （ D） Who takes more responsibilities at home, wives or husbands. （ A） There were more husbands who did the housework than wives. （ B） Husbands did half of the housework all the time. （ C） There were more wives than husbands who did the housewor

37、k. （ D） Wives did almost all the housework at home. （ A） They may not be able to take their vacation. （ B） It may snow during their vacation. （ C） They are going to need more money. （ D） They may miss graduation. （ A） They are going skiing. （ B） Their plans include other friends. （ C） They will driv

38、e together. （ D） Their reservations have been canceled. （ A） Because of the possibility of bad weather. （ B） Because of the facultys contracts. （ C） Because of the summer schedule of classes. （ D） Because of the graduation date. （ A） He might lose his financial aid. （ B） He doesnt want to attend sum

39、mer classes. （ C） He had already missed too many classes. （ D） Hes afraid he might not graduate. （ A） To introduce the concept of inflation. （ B） To discuss the causes of inflation. （ C） To review last weeks lesson on inflation. （ D） To argue in favor of inflation. （ A） Rising prices. （ B） Fixed inc

40、ome. （ C） Real income. （ D） Cost of living. （ A） Persons who have salaries agreed to in long-term contracts. （ B） Persons who own businesses. （ C） Persons with pensions. （ D） Persons with slow-rising incomes. （ A） Inflation is controlled. （ B） Real income decreases. （ C） Purchasing power stays the s

41、ame. （ D） Dollar income increases. Section B Directions: In this section, you will hear 3 short passages. At the end of each passage, you 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 ch

42、oices marked A, B, C and D. （ A） By telling some jokes to each other. （ B） By persuading other people to accept their opinions. （ C） By agreeing to accept each others opinions later. （ D） By allowing each other to hold different beliefs. （ A） General responsibilities concerning the environment. （ B）

43、 Responsibilities concerning human relationships. （ C） Social responsibility. （ D） Family responsibility. （ A） Respect and responsibility exist in all relationships. （ B） Respect is connected with dignity and responsibility. （ C） Good relationships can be developed when people agree with each other.

44、 （ D） Young people tend to forget their responsibilities most of the time. Section C Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are

45、required to fill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the 36 The biggest safety thre

46、at facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the last 15 years, 【 B1】 _ have reported well over 100 【 B2】 _ that could have been caused by electromagnetic interference. The source of this interference remains 【 B3】 _ , but i

47、ncreasingly, experts are pointing the 【 B4】 _ at portable electronic devices such as portable computers, radio and cassette players and 【 B5】 _ telephones. RTCA, an organization which advises the aviation industry, has 【 B6】 _ that all airlines ban such devices from being used during “critical“ 【 B7

48、】 _ of flight, particularly take-off and landing. Some experts have gone further, calling for a 【 B8】_ ban during all flights. Currently, rules on using these devices are left up to individual airlines. And 【 B9】 _ , given that many passengers want to work during flights. The difficulty is predictin

49、g how electromagnetic fields might affect an aircrafts computers. 【 B10】 _ . But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not. 【 B11】 _ . 37 【 B1】 38 【 B2】 39 【 B3】 40 【 B4】 41 【 B5】 42 【 B6】 43 【 B7】 44 【 B8】 45 【 B9】 46 【 B10】 47 【 B11】 Section A Directions: In this section, there is a passage with ten blanks. You are required to select one word for ea