2015年12月英语六级考试全套模拟卷9

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参加2015年12月英语四六级考试的同学想必已经开始为此做准备了，文都四六级考试网小编整理了一些英语六级模拟题供大家练习，希望有助于大家复习。
　　Part II Reading Comprehension (35 minutes)
　　Directions: There are 4 reading passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A., B., C. and D. You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center.
　　Questions 21 to 25 are based on the following passage:
　　For all their great diversity of shapes and sizes, glaciers can be divided into two essential types: valley glaciers, which flow downhill from mountains and are shaped by the constraints of topography(地貌), and ice sheets, which flow outward in all directions from dome—like centers of accumulated ice to cover vast expanse of terrain. Whatever their type, most glaciers are remnants of great shrouds of ice that covered the earth eons ago. In a few of these glaciers the oldest ice is very ancient indeed; the age of parts of the Antarctic sheet may exceed 500,000 years.
　　Glaciers are born in rocky womb above the snow line, where there is sufficient winter snowfall and summer cold for snow to survive the annual melting. The long gestation period of a glacier begins with the accumulation and gradual transformation of snow flakes. Soon after they reach the ground, complex snowflakes are reduced to compact, roughly spherical ice crystals, and the basic components of a glacier. As new layers of snow and firn, snow that survives the melting of the previous summer, accumulate, they squeeze out most of the air bubbles trapped within and between the crystals below. This process of recrystallization continues throughout the life of the glacier.
　　The length of time required for the creation of glacier ice depends mainly upon the temperature and the rate of snowfall. In Iceland, where snowfall is heavy and summer temperatures are high enough to produce plenty of melt—water, glacier ice may come into being in a relatively short time—say, ten years. In parts of Antarctica, where snowfall is scant and the ice remains well below its melting temperature year round, the process may require hundreds of years.
　　The ice does not become a glacier until it moves under its own weight, and it cannot move significantly until it reaches a critical thickness—the point at which the weight of the piled—up layers overcomes the internal strength of the ice and the friction between the ice and the ground. This critical thickness is about 60 feet. The fastest moving glaciers have been gauged at not much more than two and a half miles per year, and some cover less than 1/100 inch in that same amount of time. But no matter how infinitesimal the flow, movement is what distinguishes a glacier from a mere mass of ice.
　　21. Which of the following is the most appropriate definition of glacier?
　　A. Glaciers fall into two basic categories: valley glaciers and ice sheets.
　　B. Glaciers are huge masses of ice that move under their own weight.
　　C. Glaciers either flow downhill from mountains or flow outward in all directions from dome—like centers of accumulated ice.
　　D. Glaciers are primarily formed in the rocky mountain tops above the snow line.
　　22. What is implied in the passage?
　　A. Glaciers can be divided into many categories according to their shapes and sizes.
　　B. Ice sheets move faster than valley glaciers.
　　C. It takes longer for glaciers to form in Antarctica than in Iceland.
　　D. Valley glaciers are not as old as ice sheets.
　　23. Why does the author mention the formation of glaciers in Iceland in the third paragraph?
　　A. Heavy snowfall and high summer temperatures make glaciers come into existence in a relatively short period of time in Iceland.
　　B. Iceland contains some of the oldest ice sheets in existence.
　　C. Iceland has one of the best—preserved glaciers in the world.
　　D. People expect to find some relatively new glaciers in Iceland.
　　24. What analogy did the author use when describing the formation of glaciers?
　　A. womb B. trap C. crystal D. birth
　　25. Which of the following is the best title for the article?
　　A. Formation of Glaciers B. Sizes and Shapes of Glaciers
　　C. The History of Glaciers D. Why Do Glaciers Move?
        
         
         

enthree

　　Questions 26 to 30 are based on the following passage:
　　Botany, the study of plants, occupies a peculiar position in the history of human knowledge. For many thousands of years it was the one field of awareness about which humans had anything more than the vaguest of insights. It is impossible to know today just what our Stone Age ancestors knew about plants, but from what we can observe of pre—industrial societies that still exist, a detailed learning of plants and their properties must be extremely ancient. This is logical. Plants are the basis of the food pyramid for all living things, even for other plants. They have always been enormously important to the welfare of people, not only for food, but also for clothing, weapons, tools, dyes, medicines, shelter, and a great many other purposes. Tribes living today in the jungle of the Amazon recognize literally hundreds of plants and know many properties of each. To them botany, as such, has no name and is probably not even recognized as special branch of “knowledge" at all.
　　Unfortunately, the more industrialized we become the farther away we move from direct contact with plants, and the less distinct our knowledge of botany grows. Yet everyone comes unconsciously on an amazing amount of botanical knowledge, and few people will fail to recognize a rose, an apple, or an orchid. When our Neolithic ancestors, living in the Middle East about 10,000 years ago, discovered that certain grasses could be harvested and their seeds planted for richer yields the next season, the first great step in a new association of plants and humans was taken. Grains were discovered and from them flowed the marvel of agriculture: cultivated crops. From then on, humans would increasingly take their living from the controlled production of a few plants, rather than getting a little here and a little there from many varieties that grew wild. And the accumulated knowledge of tens of thousands of years of experience and intimacy with plants in the wild would begin to fade away.
　　26. According to the first paragraph, early humans .
　　A. did not enjoy the study of botany
　　B. placed great importance on the ownership of properties
　　C. probably had extensive knowledge about plants
　　D. didn't know how to cultivate crops
　　27. The word “this” in the sentence “This is logical” most probably refers to.
　　A. that our ancestors knew plants are the basis of the food pyramid for all living things
　　B. that our ancestors' knowledge about plants and their properties was very detailed and organized
　　C. that extensive knowledge about plants and their properties are essential in the cultivation of crops in pre—industrial societies
　　D. that a detailed learning of plants and their properties was not obtained until the pre—industrial societies came into being
　　28. According to the author, when did our knowledge of botany become less distinct?
　　A. As our society become industrialized.
　　B. As our direct contact with plants increases.
　　C. As urbanization took place.
　　D. As we became less interested in the extensive botanical knowledge.
　　29. Why does the author mention tribes living in the jungle of the Amazon in the passage?
　　A. To show that people who have no contact with modern civilization have no idea what the term botany means.
　　B. To show even the most primitive people have extensive knowledge about plants and their properties.
　　C. To show how important the study of botany is to human beings.
　　D. To show that how people unconsciously come into possession of an amazing amount of botanical knowledge.
　　30. The relationship between botany and agriculture is similar to the relationship between the study of animals and .
　　A. sheep raising B. bird watching
　　C. deer hunting D. horse riding
        
         
         

enone

　　Questions 31 to 35 are based on the following passage:
　　The great advance in rocket theory 40 years ago showed that liquid—fuel rocket were far superior in every respect to the skyrocket with its weak solid fuel, the only kind of rocket then known. However, during the last decade, large solid—fuel rockets with solid fuels about as powerful as liquid—fuels have made their appearance, and it is a favorite layperson's question to inquire which one is better. The question is meaningless; one might as well ask whether a gasoline or a diesel engine is better. It all depends on the purpose. A liquid—fuel rocket is complicated, but has the advantage that it can be controlled beautifully. The burning of the rocket engine can be stopped completely; it can be re—ignited when desired. In addition, the thrust can be made to vary by adjusting the speed of the fuel pumps. A solid—fuel rocket, on the other hand, is rather simple in construction, though hard to build when a really large size is desired. But once you have a solid—fuel rocket, it is ready for action at very short notice. A liquid—fuel rocket has to be fueled first and cannot be held in readiness for very long after it has been fueled. However, once a solid—fuel rocket has been ignited, it will keep burning. It cannot be stopped and re—ignited whenever desired (it could conceivably be stopped and re—ignited after a pre—calculated time of burning has elapsed) and its thrust cannot be  varied. Because a solid—fuel rocket can be kept ready for a long time, most military missiles employ solid fuels, but human—piloted space flight needs the fine adjustments that can only be provided by liquid fuels. It may be added that a liquid—fuel rocket is an expensive device; a large solid—fuel rocket is, by comparison, cheap. But the solid fuel, pound per pound, costs about 10 times as much as the liquid fuel. So you have, on the one hand, an expensive rocket with a cheap fuel and on the other hand a comparatively cheap rocket with an expensive fuel.
　　31. Which of the following is implied in the passage?
　　A. Rockets using liquid fuel was not available 40 years ago although researches were being done on the practicability of using liquid fuel in rockets.
　　B. It was not until the last decade that rockets using solid fuels made their appearance.
　　C. Complicated rockets using solid fuel have the advantage of flexibility and adjustability that liquid—fuel rockets don't possess.
　　D. Liquid fuel costs about 10 times as much as the solid fuel costs.
　　32. Which of the following was NOT mentioned as one of the advantages of liquid瞗uel rockets?
　　A. They are easy to control. B. Their thrust is variable.
　　C. They are easy to construct. D. Their speed is adjustable.
　　33. Solid—fuel rockets are expensive to operate because of their .
　　A. burning time B. size C. fuel D. engines
　　34. The chief consideration for using liquid fuels in human—piloted space flights is that the rocket .
　　A. is inexpensive to construct B. is capable of carrying heavy cargo
　　C. is easy to control D. is inexpensive to operate
　　35. Which of the following statements is true about solid—fuel rockets?
　　A. They are simple to construct.
　　B. They can be re—ignited when desired.
　　C. They can provide fine adjustments in operation.
　　D. They cost a lot less than liquid—fuel rockets to construct.
        
         
         

enfour

　　Questions 36 to 40 are based on the following passage:
　　For some time past it has been widely accepted that babies—and other creatures—learn to do things because certain acts lead to rewards; and there is no reason to doubt that this is true. But it used also to be widely believed that effective rewards, at least in the early stages, had to be directly related to such basic physiological drives as thirst or hunger. In other words, a baby would learn if he got food or drink or some sort of physical comfort, not otherwise.
　　It is now clear that this is not so. Babies will learn to behave in ways that produce results in the world with no reward except the successful outcome.
　　Papousek began his studies by using milk in the normal way to reward the babies and so teach them to carry out some simple movements, such as turning the head to one side or the other. Then he noticed that a baby who had had enough to drink would refuse the milk but would still go on making the learned response in situations where no milk was provided. He quickly found that children as young as four months would learn to turn their heads to right or left if the movement switched on a display of lights— and indeed that they were capable of learning quite complex turns to bring about this result, for instance, two left or two right, or even to make as many as three turns to one side.
　　Papousek's light display was placed directly in front of the babies and he made the interesting observation that sometimes they would not turn back to watch the lights closely although they would smile and bubble when the display came on. Papousek concluded that it was not primarily the sight of the lights which pleased them, it was the success they were achieving in solving the problem, in mastering the skill, and that there exists a fundamental human urge to make sense of the world and bring it under intentional control.
　　36. In this article, the author suggests that babies learn to do things when
　　A. such acts lead to desired rewards
　　B. they enjoy a sense of achievement
　　C. their curiosity is satisfied
　　D. they can derive fun from such acts
　　37. In his experiment, Papousek noticed that a baby
　　A. would go on making the learned response with no milk provided
　　B. would have to have enough to drink before the experiment began
　　C. would not make the learned response until milk is provided
　　D. would make the learned response with pleasure only when it saw the light display
　　38. According to the passage, the babies would smile and bubble when the light display was turned on primarily because
　　A. the babies were impressed by the beautiful sight
　　B. the lights are related to babies' physical drives
　　C. the babies felt they succeeded in switching on the lights
　　D. the babies were happy that they learned how to respond to this sight
　　39. According to Papousek, the pleasure the babies displayed when they saw the light display was a reflection of
　　A. the satisfaction of their curiosity
　　B. the satisfaction of their physiological needs
　　C. the basic human urge to understand and control the world
　　D. the babies' desire to solve complex problems
　　40. What does the word “it” in the last line refer to?
　　A. success B. skill C. light D. world
        
         
         

ensix

　　Part III Vocabulary and Structure (20 minutes)
　　Directions: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A., B., C. and D. Choose the ONE that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center.
　　41. Parents will always remember the first time their baby ___ the word Mama or Papa.
　　A. speaks B. tells C. utter D. articulates
　　42. He might have thought it was all right to marry a woman ten years older than him, but ___ he eyes of his friends he was crazy.
　　A. with B. to C. against D. in
　　43. Setting up a committee might be a way ___ the project more efficiently.
　　A. to be doing B. doing
　　C. to do D. being done
　　44. It ___ to see so many children in that mountainous area cannot even afford elementary education.
　　A. pains her B. makes her pain
　　C. is paining D. is pained
　　45. These documents will provide ___ you all information you may need.
　　A. about B. for C. with D. to
　　46. He ___ his eyes to try to see what the teacher wrote on the blackboard.
　　A. strained B. exerted C. utilized D. applied
　　47. Most of the nations in the world are working in an collaborative effort to ___ hunger from the world.
　　A. abandon B. diminish C. withdraw D. eliminate
　　48. Our boss, Mr. Thompson, ___ a raise in salary for ages, but nothing has happened yet.
　　A. was promising B. has been promising
　　C. promised D. has promised
　　49. We all feel it's time ___ done about the air pollution in the city.
　　A. something was done B. anything will be done
　　C. something should be done D. everything is done
　　50. We are supposed to ___ all the books when we are finished with them.
　　A. put off B. put up
　　C. put away D. put out
        
         
         

enfive

　　51. There is an increasing ___ towards the excessive use of violence in American movies.
　　A. phenomenon B. tradition
　　C. attitude D. tendency
　　52. When Michael Jordan was in his heyday (鼎盛时期) at basketball he ___ baseball for a year.
　　A. slipped into B. reverted to
　　C. resorted to D. turned to
　　53. He was determined to sail around the world ___ his illness and old age.
　　A. given B. although
　　C. despite D. in spite
　　54. He was ___ exhausted at the end of the Marathon.
　　A. utter B. sheer C. absolute D. utterly
　　55. It ___ that the old woman she had been taking care of was indeed her own mother.
　　A. turned over B. turned in
　　C. turned across D. turned out
　　56. The plant has been ___ of the money it needs for modernization.
　　A. deleted B. extracted C. deprived D. convinced
　　57. As long as we don't lose heart, I believe we can achieve our goal ___.
　　A. in the long run B. in the first place
　　C. on the whole D. at least
　　58. The surpassing beauty of his paintings ___ those of his contemporaries.
　　A. besmeared B. belittled C. dwarfed D. bedimmed
　　59. The microscope can ___ the object 50 times in diameter.
　　A. increase B. multiply C. enlarge D. magnify
　　[NextPage]
　　60. Communication is the process of a message from a source to an audience via a channel.
　　A. shifting B. transmitting C. submitting D. transforming
        
         
         

enone

　　Part III Short Answer Questions
　　86. different causes that have influence on the alteration of weather
　　87. raise the temperature of the earth's surface
　　88. This phenomenon may be due to the variable behavior of the sun
　　89. the world should be entering a new Ice Age
　　90. as a counterbalance to the cooling of the earth's surface
　　Part IV Writing (for reference only)
　　Pollution: An Increasing Concern in China
　　It is reported that ten big cities in China are being ranked among the top twenty cities with the highest pollution index in the world. This means it is high time that we did something to bring the situation under control.
　　Many factors are contributing to the worsening situation: industrial wastes pumped into the air, the lakes and the rivers; more and more automobiles crowding into the streets; the widespread use of plastic bags,etc.
　　To my view, stiffer laws and regulations must be implemented to check pollution. Industries that release wastes without permission should be heavily fined. Cars should be equipped to minimize the exhaust they release into the air. And the use of plastic bags and disposable meal boxes should be banned.
　　What's more, the media should play an important role in implanting a sense of environmental consciousness into people's mind. If everybody works towards a common goal of making the environment better, we can create a cleaner and lovelier world for us and for the coming generations as well.
    做完这套六级全套模拟题后，考生要对照答案认真找出自己的不足，总结做题技巧，练习的时候最好掐着时间，以适应真正考试的时间安排。