9,600 years, the population increased from some 8million to 500 million in 1650. Between 1650 and 1975, the population has increased from 500 million to more than 4 billion. And the population reached 6.2 billion throughout the world by the year 2000. One way to appreciate this dramatic difference in such abstract numbers is to reduce the time frame to something that is more manageable. Between 8000 B.C. and 1650, an average of only 50,000 persons was being added annually to the world's population. At present, this number is added every six hours. The increase is about 80,000,000 persons annually.
57. The word \ [A] statistics of human [B] surroundings study [C] accumulation of human [D] development of human
58. Which of the following demographic growth patterns is most suitable for the long thin powder fuse analogy?
[A] A virtually stable or slightly decreasing period and then a sudden explosion of population.
[B] A slow growth for a long time and then a period of rapid, dramatic increase.
[C] Too many people on earth and a few rapid increase in the number added each year. [D] A long period when death rates exceed birthrates and then a short period with higher fertility and lower mortality.
59. During the first period of demographic history, societies were often in danger of extinction
because ________.
[A] only one in ten persons could live past 40
[B] there was higher mortality than fertility in most places
[C] it was too dangerous to have babies due to the poor conditions [D] our ancestors had little enthusiasm for more children 60. Which statement is TRUE about population increase?
[A] There might be an increase of 2.2 billion persons from 1975 to the year 2000. [B] About 50,000 babies are born annually at present.
[C] Between 8000 B.C. and the present, the population increase is about 80,000,000 persons each year.
[D] The population increased faster between 8000 B.C. and 1650 than between 1650 and the present.
61. The author of the passage intends to ________.
[A] warn people against the population explosion in the near future
[B] compare the demographic growth pattern in the past with that after 1650 [C] find out the cause for rapid increase in population in recent years [D] present us a clear and complete picture of the demographic growth Part V Error Correction (15 minutes)
Directions: This part consists of a short passage. In this passage, there are altogether 10 mistakes, one in each numbered line. You may have to change a word, add a word or delete a word. Mark out the mistakes and put the corrections in the blanks provided. If you change a word, cross it out and write the correct word in the corresponding blank. If you add a word, put an insertion
mark (∧) in the right place and write the missing word in the blank. If you delete a word, cross it out and put a slash (/) in the blank. Example:
Television is rapidly becoming the literature of our periods. 1. time/times/period Many of the arguments having used for the study of literature 2.______________ as a school subject are valid for ∧ study of television. 3.______________ Are you worried about the rising crime rate? If you are, then you probably know that your house,
possessions and persons are increasingly in danger of
suffering from the tremendous rise in the cases of burglar 62. ________ and assault. Figures indicate that it is an ever-increasing 63. ________ crime rate but it is only too easy to imagine \
never happen to me\ really can happen to you and, if you live in the large
city, you run twice the risk of being a victim. 65. ________ Fortunately, there is something definite what you 66. ________ can do. Protect Alarms can help to protect your house with a burglar alarm system which is effective, simple to
operate and easily affordable. You may remember that 67. ________ possessing a burglar alarm is no indication which your 68. ________ house is packed with valuable possessions. It quite
simply indicates of unwelcome visitors that yours is one 69. ________ house they will not break into easily so they carry on to
an unprotect house where their job is made a lot easier. 70. ________ Send now for our free leaflet telling you how we can protct and alarm your house quickly, easily and
cheaply. Complete out and tear off the slip below and 71. ________ post it to us. Postage is free. Part VI Translation (5 minutes)
Directions: Complete the following sentences on Answer Sheet 2 by translating into English the Chinese given in brackets.
72. Southern Africa has ________________________ (该病的患病率最高，几乎是亚洲的两倍).
73. It is time the authorities concerned________________________ (采取适当措施来解决交通).
74. In my opinion, playing video games ________________________ (既花费大量的时间也有害健康).
75. When it comes to education, ________________________ (多数人都认为教育是终生学习).
76. The situation will worsen ________________________ (除非采取措施加以阻止). 2010年12月大学英语六级考试全真预测试卷五答案详解 Part I Writing Precious Water
No one doubts the importance of water. Human beings live on water, animals live on water,
plants live on water and all living things live on water. You can’t imagine what would happen if there were no water in the world!
China is one of the countries in the world that are badly short of water. Water problem has become more acute in recent years with the increase of water consumption and pollution. In big cities, the water problem has become even worse. With the growth of population, more and more water is needed. With the development of the industry, a large quantity of water has been and is being polluted. Water pollution is the most serious problem that China is facing. It has spread to rivers, lakes, and even the oceans.
In order to survive, man has to be wise enough to treasure water and try to prevent it from being polluted. Man should also know that all resources in the world are limited, including water. Make good use of them, otherwise, man will be punished by nature. To treasure water is to treasure life; to protect our environment is to protect ourselves. Part II Reading Comprehension(Skimming and Scanning)
1. A 细节题。根据题干信息词World Health Organization定位到第三段Air: the World Health Organization(WHO)says three million people are killed worldwide by outdoor air pollution annually from vehicles and industrial emissions，即：世界卫生组织公布，全世界每年有3百万人死于室外空气污染，故选A。
2. C 细节题。根据题干信息词Land can be polluted定位到第五段第三句话Agriculture can pollute land with pesticides, nitrate-rich fertilizers and slurry from livestock，即：来自农业的杀虫剂、富含硝酸盐的化肥以及家畜带来的泥浆都会污染土地，故选C。
3. D 细节题。根据题干信息词man. made chemicals和affected定位到第一个小标题下第二段末句Affected species include polar bears—so not even the Arctic is immune. And the chemicals climb the food chain, from fish to mammals，and to us，即：受人造化学制品影响的种类包括北极熊、从鱼到哺乳动物的生物链，也包括人，未提到鸟，故选D。
4. B 细节题。根据题干信息词local residents定位到第一个小标题下的末句So local residents，like many in poor communities around the globe，have faced the problem of investigating their claim that industries on their doorsteps are making them sick，即：当地居民声称他们门前的工业导致他们生病，故选B。
5. A 细节题。根据题干信息词The pesticide DDT定位到第二个小标题下的第二段The pesticide DDT does great damage to wildlife and can affect the human nervous system，but can also be effective against malaria(疟疾)，即：杀虫剂DDT会伤害野生动植物并且能影响人类的神经系统，但对预防疟疾是很有效的，故选A。
6. C 细节题。根据题干信息词a U.N. convention定位到第二个小标题末段第二句话There is a U.N. convention on trans-boundary air pollution, but that cannot cover every problem that can arise between neighbors，or between states which do not share a border，即：联合国在跨边界的空气污染上有协定，但是不包括邻国之间出现的每个问题，也不包括不接壤的州之间出现的问题，故选C。
7. C 细节题。根据题干信息词a way of cleaning up after ourselves定位到第三个小标题第二段One way of cleaning up after ourselves would be to throw less away，designing products to be recycled or even just to last longer，即：清洁的方法可以是少丢弃一些，设计可循环的产品或使用持久一些，未提到不再使用，故选C。
8. aggravate asthma symptoms in children。细节题。根据题干定位到第四个小标题首段末旬It found that increases in air pollution tended to aggravate asthma symptoms in children，即：空气污染的增加恶化孩子的哮喘症状，故得答案。
9. pollution coming from a particular plant。细节题。根据题干定位到第四个小标题第三段末句But，according to?prove that illnesses suffered were caused by pollution coming from a particular plant，即：证明疾病是由一种来自特殊植物的污染而造成的，故得答案。
10. improve the situation。细节题。根据题干定位到倒数第二段首句Martinus van Schalkwyk?said there were measures in place to improve the situation，即：环境和观光事业部长Schalkwyk参观了德尔班南部的盆地，并指出还是有措施可以改善现状的，故得答案。 Part III Listening Comprehension Section A
11. A 语义替换题。女士说玛丽获得了英语演讲比赛的第一名，这真是件了不起的事情，男士说她应该得到这一荣誉，所以A正确。
12. D 信息明示题。男士说开车过去不是理想的方式，在这个时候，他总是乘地铁，由此可知，D正确。
13. B 综合推断题。男士说华盛顿有许多博物馆、艺术馆和餐馆，无论天气如何，他都非常高兴到那里去，由此推断，男士不在乎天气，所以B正确。
14. C 综合推断题。男士说爸爸想在郊外买一栋别墅，这与妈妈的意愿相悖，而且爸爸把妈妈的话当成耳旁风，由此可知，妈妈最近不高兴的原因是她和爸爸的意见不一致，所以C正确。
15. B 语义替换题。男士说自己的电话坏了，但他又有很多电话需要在下午回复，女士说自己将开会到五点，男士可以用她的电话，由此可知，B正确。 16. C 综合推断题。女士问：“为什么给我一张超速罚款单?我的行驶速度是每小时40英里。”男士说：“你难道没有看到附近的告示吗?时速限制是‘每小时l0英里’。”由对话中的关键词speeding ticket，40 miles per hour，10 mph limits可知，C正确。
17. A 综合推断题。由对话中的关键词On the shelves，book has been borrowed from here和look it up in the computer可知，对话应该发生在图书馆，所以A正确。
18. B 信息明示题。女士说，杰克似乎对绘画作品非常狂热，他卧室的墙上挂了许多著名的油画，其中一些还非常贵重，由此可知杰克非常喜欢画，所以B正确。 Conversation One
19. B 信息明示题。男士说他正在阿拉斯加现场报道有关陨星撞击的事件，故选B。 20. C 信息明示题。男士说，目击者称他们在撞击前看到一道亮光滑过天空，还伴随着隆隆声，故选C。
21. A 信息明示题。女士说许多人都认为，六千五百万年前一颗直径为l0千米的陨星撞击了地球，这导致了包括恐龙在内大量动物的灭绝，由此可知，六千五百万年前恐龙灭绝了，故选A。
22. C 信息明示题。男士最后说，近年来，天文学家更多地关注许多未知太空岩石或小行星的移动轨道，以希望可以判断出它们对人类造成的威胁，由此可知，天文学家近期工作的重点在于测定小行星的运行轨迹，故选C。 Conversation Two
23. B 信息明示题。男士问女士是否注意到电影院对面又建了一间咖啡屋，女士觉得那间咖啡屋看起来很棒，而且每周六晚上还有现场音乐表演，特别适合在看完电影后去，由此可知，那间新咖啡屋的特别之处在于每周六晚上的现场音乐，故选B。
24. A 综合推断题。男士说咖啡屋吸引的是那些没别的事可做只好闲坐在那儿喝高价咖啡的人，电影院对面那间新开的咖啡屋每杯咖啡卖四美元，简直就是疯了，那儿有五十种来自爪哇、埃塞俄比亚、肯尼亚、巴西等地的特殊混合咖啡，可他觉得味道完全一样，由此可知，男士觉得那儿的咖啡标价过高，没什么好的，故选A。
25. D 综合推断题。男士一直在批判现在的咖啡屋，在最后女士问男士是否喝完了咖啡，是否可以走了时，男士回答说自己花了超过三美元买那杯咖啡，因此要喝完，由此可知，他们是在喝咖啡，故选D。 Section B Passage One
26. A 信息明示题。文章第一段指出，美国队和日本队的比赛就要进入下半场，比分是51比26，所以A正确。
27. A 信息明示题。文章第一段指出，The U.S. Dream Team is made up of NBA veterans，由NBA veterans(NBA有经验的队员)可知，A正确。
28. C 信息明示题。文章第二段指出，美国梦之队的头号得分选手在与一名观众争斗之后被驱逐出场，由此可知，C正确。
29. B 信息明示题。文章第三段指出，美国队的教练将本队迟缓的表现归咎于比赛前一晚所吃的生鱼片，所以B正确。 Passage Two
30. B 信息明示题。文章第二段指出，有时山等远方的物体看起来很清晰，感觉离得很近，这就表明空气中水蒸气很多，很可能要下雨，因此B正确。 3 1. C 信息明示题。文章第二段指出，If the rainbow appears in the morning，rainy weather will probably come. 因此C正确。
32. A 综合推断题。文章开始指出，如果准确研究周围的各种现象，就有可能判断出天气的变化;文章最后又提到，各种判断天气的方法是人们利用眼睛和大脑得出的，因此A正确。
Passage Three
33. C 信息明示题。文章第二段开始指出，第一点就是要有明确的目标，即to have clear goals，所以C正确。
34. A 信息明示题。文章第三段指出，a diversified portfolio即为a mix of stocks，mutual funds，bonds，and cash，也就是各种投资项目的组合体，故排除B、C、D，选A。 35. A 综合推断题。文章最后指出，It’s a roller-coaster ride with many minus years as well, so you have to stay in for the long term，再结合前文可知，需要从长远考虑的原因是市场回报时好时坏，就像坐过山车一样有涨有落，因此A正确，而其他几项都不是从长远考虑的具体原因。 Section C
36. fashionable 37. complained 38. obedience 39. Actually 40. critics 41. opportunity 42. traditional 43. approve
44. people whom their parents have never met, and choose occupations different from those of their parents
45. the ambitions that parents have for their children are another cause of the division between them
46. elderly people are valued for their wisdom, but in our society, the knowledge of a lifetime may become obsolete overnight
Part IV Reading Comprehension(Reading in Depth) Section A
47. Because Australia bans the use of certain antibiotics in livestock.
根据题干中的关键词Australia和low drug resistance定位到文章开头，可知一项研究发现，在澳大利亚，导致常见食源性疾病的细菌抗药性很低，这与美国和欧洲的情况有所不同;