[外语类试卷]大学英语四级模拟试卷68及答案与解析.doc
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1、大学英语四级模拟试卷 68及答案与解析 一、 Part I Writing (30 minutes) 1 For this part, you are allowed thirty minutes to write a composition on the topic: The Way to Get Information. You should write at least 120 words following the outline given in Chinese. 1. 获取信息 的方式 2. 我最喜欢通过 来获得信息 3. 结论 二、 Part II Reading Compreh
2、ension (Skimming and Scanning) (15 minutes) 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 st
3、atement contradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 2 Man and Nature The balance of nature is a delicate system of checks and counterchecks. Nature has its own way of checking the life and distribution of the different organism
4、s and helping their growth. An epidemic may be considered natures way of checking population growth. Man in his attempt to conquer nature and to utilize it to his advantage has interfered with the balance of nature, thereby creating problems of a complex nature. Natures ways of maintaining the balan
5、ce are intricate and not easily understood and mans application of his scientific knowledge and techniques has upset this balance so much that today, being aware of the disastrous consequences, he takes measures against them. No animal or plant can live in isolation, for different organisms are part
6、s of a vast dynamic complex of living things. As no man or community is self-sufficient, no organism can live by itself. When man interferes with the interdependence and interrelationships of the different organisms, he is, in effect, upsetting their balanced relationships and his action can have a
7、chain reaction. If we prevent fish eggs from being deposited in a pond, we are allowing an unchecked growth of weeds. The waterfowl which feeds on tadpoles will look for alternatives, thereby tending to upset these balanced relationships. It is important that for the preservation of beauty in nature
8、 the balance of nature is maintained. Man for his own survival has to make his peace with plant and animal life, the size and distribution of which he has interfered with. It is to be noted that in every plant and animal community there is a trend towards a balance between the different species. Whe
9、n each successive species is of the right number to maintain a constant population, a balance between the different species is maintained and this state is referred to as the climax stage. Man is forever upsetting the balance of the climax stage. He has added to the numbers of animals and plants tha
10、t are useful to him. In the process he has unwittingly helped the increase in the number of insects and vermin and as a result he has to wage a relentless war against them. If man continues to interfere with the balance of nature, it is possible that some animals and birds may soon become extinct. T
11、he indiscriminate hunting of whales has reduced the number of some species almost to the verge of extinction and international laws have been drawn up to protect them. The balance of nature is to be maintained in order to prevent soil deterioration. Human intervention has altered the established rel
12、ationship between the plants of an area and the soil of that area. Animals introduced by man, sheep and goats for example, have led to widespread soil deterioration. By cutting down trees or by practising unsuitable systems of agriculture, man destroys the crumb structure of soil, thereby making it
13、susceptible to erosion. Soil erosion results in loss of soil fertility and maintaining soil fertility is considered the biggest problem facing mankind apart from the prevention of war. The increase in world population and the growth of civilisation have been the two major factors that have led man t
14、o cut down forests on an unprecedented scale and the erosion caused by the cutting down of huge areas of forests has resulted in floods on a scale hitherto unknown. Soil erosion can whittle away soil fertility and if adequate and effective measures are not taken it can become a menacing spectre tear
15、ing at the prosperity of many countries. Pollution, in its different forms, interferes with the balance of nature. Water pollution affects natures balance in oceans, lakes and rivers. Man-made pollution of water is due to, municipal sewage, dumping by factories and the depositing of pesticides. Soli
16、d wastes can permeate the soil and pollute lakes and rivers. Man has to adopt the philosophy of thrift by conserving natural resources and not destroying them by interfering with the balance of nature. He has to exploit natural resources, taking the environment as a whole. He has to practise fertili
17、zation, soil conservation and water management to make a balanced use of the resources of nature possible. 2 Natures ways of maintaining the balance are simple and easily understood. ( A) Y ( B) N ( C) NG 3 Man should take the philosophy of thrift by conserving natural resources and not destroying t
18、hem. ( A) Y ( B) N ( C) NG 4 The example of tadpoles, fish eggs and waterfowl is used to show that the activities of man could give rise to negative chain reactions. ( A) Y ( B) N ( C) NG 5 If man continues to interfere with the balance of nature, it is possible that man may soon become extinct. ( A
19、) Y ( B) N ( C) NG 6 By upsetting the balance of the climax stage, man will encourage the indiscriminate hunting of whales for food. ( A) Y ( B) N ( C) NG 7 The balance of nature can prevent soil deterioration. ( A) Y ( B) N ( C) NG 8 Water pollution cant affect natures balance in oceans, lakes and
20、rivers. ( A) Y ( B) N ( C) NG 9 The balance of nature is to be maintained so as to prevent _. 10 According to the passage, the peoples living of many countries could be seriously threatened by _. 11 We learn from the passage that to maintain the balance of nature, we will have to _. Section A Direct
21、ions: In this section, you will 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
22、, you must read the four choices marked A, B, C and D, and decide which is the best answer. ( A) In bed. ( B) At her mothers. ( C) In the hospital. ( D) At the office. ( A) By plane. ( B) By car. ( C) By train. ( D) By bus. ( A) He would prefer calling her next week. ( B) He will let her decide abou
23、t the next meeting. ( C) He would like to buy some refreshments for the meeting. ( D) He definitely wants to know about the meeting. ( A) 9:20. ( B) 9:26. ( C) 9:14. ( D) 9:06. ( A) He was talking in a newspaper advertisement. ( B) He was talking to a newspaper salesman. ( C) He was talking at a new
24、spaper office. ( D) He was talking at a car dealers. ( A) It was really very cold. ( B) There was snow all winter. ( C) It snowed in December. ( D) The temperature was below zero. ( A) Something happened to her car. ( B) She was broken and couldnt afford the bus. ( C) She got up too late to catch th
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- 外语类 试卷 大学 英语四 模拟 68 答案 解析 DOC
