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下半年CET6閱讀模擬試題及答案
在學習、工作生活中，我們最少不了的就是試題了，借助試題可以更好地考查參試者所掌握的知識和技能。什么樣的試題才能有效幫助到我們呢？下面是小編為大家收集的下半年CET6閱讀模擬試題及答案，僅供參考，歡迎大家閱讀。
下半年CET6閱讀模擬試題及答案 1
A controversy erupted in the scientific community in early 1998 over the use of DNA (deoxyribonucleic acid ) fingerprinting in criminal investigations. DNA fingerprinting was introduced in 1987 as a method to identify individuals based on a pattern seen in their DNA, the molecule of which genes are made. DNA is present in every cell of the body except red blood cells. DNA fingerprinting has been used successfully in various ways, such as to determine paternity where it is not clear who the father of a particular child is. However, it is in the area of criminal investigations that DNA fingerprinting has potentially powerful and controversial uses.
DNA fingerprinting and other DNA analysis techniques have revolutionized criminal investigations by giving investigators powerful new tools in the attempt to trove guilt, not just establish innocence. When used in criminal investigations, a DNA fingerprint pattern from a suspect is compared with a DNA fingerprint pattern obtained from such material as hairs or blood found at the scene of a crime. A match between the two DNA samples can be used as evidence to convict a suspect.
The controversy in 1998 stemmed form a report published in December 1991 by population geneticists Richard C. Lewontin of Harvard University in Cambridge, Mass., and Daniel L. Hartl called into question the methods to calculate how likely it is that a match between two DNA fingerprints might occur by chance alone. In particular, they argued that the current method cannot properly determine the likelihood that two DNA samples will match because they came from the same individual rather than simply from two different individuals who are members of the same ethnic group. Lewontin and Hartl called for better surveys of DNA patterns methods are adequate.
In response to their criticisms, population geneticists Ranajit Chakraborty of the University of Texas in Dallas and Kenneth K.Kidd of Yale University in New Haven, Conn., argued that enough data are already available to show that the methods currently being used are adequate. In January 1998, however, the federal Bureau of Investigation and laboratories that conduct DNA tests announced that they would collect additional DNA samples form various ethnic groups in an attempt to resolve some of these questions. And, in April, a National Academy of Sciences called for strict standards and system of accreditation for DNA testing laboratories.
1.Before DNA fingerprinting is used, suspects____.
A.would have to leave their fingerprints for further investigations
B.would have to submit evidence for their innocence
C.could easily escape conviction of guilt
D.cold be convicted of guilt as well
2.DNA fingerprinting can be unreliable when ____.
A.the methods used for blood- cell calculation are not accurate
B.two different individuals of the same ethnic group may have the same DNA fingerprinting pattern
C.a match is by chance left with fingerprints that happen to belong to two different individuals
D.two different individuals leave two DNA samples.
3.To geneticists like Lewontin and Hartl, the current method ____.
A.is not so convincing as to exclude the likelihood that two DNA samples can never come from two individuals
B.is arguable because two individuals of the same ethnic group are likely to have the same DNA pattern.
C.Is not based on adequate scientific theory of genetics
D.Is theoretically contradictory to what they have been studying
4.The attitude of the Federal Bereau of Investigation shows that ____.
A.enough data are yet to be collected form various ethnic groups to confirm the unlikelihood of two DNA samples coming from two individual members
B.enough data of DNA samples should be collected to confirm that only DNA samples form the same person can match
C.enough data are yet to be collected from various ethnic groups to determine the likelihood of two different DNA samples coming form the same person
D.additional samples from various ethnic groups should be collected to determine that two DNA samples are unlikely to come from the same person
5.National Academy of Sciences holds the stance that ____.
A.DNA testing should be systematized
B.Only authorized laboratories can conduct DNA testing
C.The academy only is authorized to work out standards for testing
D.The academy has the right to accredit laboratories for DNA testing
答案：CBABB
Racket, din clamor, noise, whatever you want to call it, unwanted sound is America’s most widespread nuisance. But noise is more than just a nuisance. It constitutes a real and present danger to people’s health. Day and night, at home, at work, and at play, noise can produce serious physical and psychological stress. No one is immune to this stress. Though we seem to adjust to noise by ignoring it, the ear, in fact, never closes and the body still responds—sometimes with extreme tension, as to a strange sound in the night.
The annoyance we feel when faced with noise is the most common outward symptom of the stress building up inside us. Indeed, because irritability is so apparent, legislators have made public annoyance the basis of many noise abatement programs. The more subtle and more serious health hazards associated with stress caused by noise traditionally have been given much less attention. Nevertheless, when we are annoyed or made irritable by noise, we should consider these symptoms fair warning that other thing may be happening to us, some of which may be damaging to our health.
Of many health hazards to noise, hearing loss is the most clearly observable and measurable by health professionals. The other hazards are harder to pin down. For many of us, there may be a risk that exposure to the stress of noise increases susceptibility to disease and infection. The more susceptible among us may experience noise as a complicating factor in heart problems and other diseases. Noise that causes annoyance and irritability in health persons may have serious consequences for these already ill in mind or body.
Noise affects us throughout our lives. For example, there are indications of effects on the unborn child when mothers are exposed to industrial and environmental noise. During infancy and childhood, youngsters exposed to high noise levels may have trouble falling asleep and obtaining necessary amounts of rest.
Why, then, is there not greater alarm about these dangers? Perhaps it is because the link between noise and many disabilities or diseases has not yet been conclusively demonstrated. Perhaps it is because we tend to dismiss annoyance as a price to pay for living in the modern world. It may also be because we still think of hearing loss as only an occupational hazard.
1.In Paragraph 1, the phrase “immune to” are used to mean ___.
A.unaffected by
B.hurt by
C.unlikely to be seen by
D.unknown by
2.The author’s attitude toward noise would best be described as ___.
A.unrealistic
B.traditional
C.concerned
D.hysterical
3.Which of the following best states the main idea of the passage?
A.Noise is a major problem; most people recognize its importance.
B.Although noise can be annoying, it is not a major problem.
C.Noise is a major problem and has not yet been recognized as such.
D.Noise is a major problem about which nothing can be done.
4.The author condemns noise essentially because it ___.
A.is against the law
B.can make some people irritable
C.is a nuisance
D.in a ganger to people’s health
5.The author would probably consider research about the effects noise has on people to be ___.
A.unimportant
B.impossible.
C.a waste of money
D.essential
答案：ACCDD
下半年CET6閱讀模擬試題及答案 2
Questions 61 to 65 are based on the following passage.
It would be all too easy to say that Facebooks market meltdown is coming to an end. Afterall, Mark Zuckerbergs social network burned as much as $ 50 billion of shareholders wealth injust a couple months. To put that in context, since its debut(初次登臺) on NASDAQ in May,Facebook has lost value nearly equal to Yahoo, AOL, Zynga, Yelp, Pandora, OpenTable,Groupon, LinkedIn, and Angies List combined, plus that of the bulk of the publicly tradednewspaper industry:
As shocking as this utter failure may be to the nearly 1 billion faithful Facebook usersaround the world, its no surprise to anyone who read the initial public offering (IPO)prospectus (首次公開募股說明書). Worse still, all the crises that emerged when the companydebuted-overpriced shares, poor corporate governance, huge challenges to the core business,and a damaged brand-remain today. Facebook looks like a prime example of what Wall Streetcalls a falling knife-that is, one that can cost investors their fingers if they try to catch it.
Start with the valuation(估值). To justify a stock price close to the lower end of theprojected range in the IPO, say $ 28 a share, Facebooks future growth would have needed tomatch that of Google seven years earlier. That would have required increasing revenue by some80 percent annually and maintaining high profit margins all the while.
Thats not happening. In the first half of 2012, Facebook reported revenue of $ 2.24 billion, up38 percent from the same period in 2011. At the same time, the companys costs surged to $ 2.6 billion in the six-month period.
This so-so performance reflects the Achilles heel of Facebooks business model, which thecompany clearly stated in a list of risk factors associated with its IPO: it hasnt yet figured outhow to advertise effectively on mobile devices, The number of Facebook users accessing thesite on their phones surged by67 percent to 543 million in the last quarter, or more than half itscustomer base.
Numbers are only part of the problem. The mounting pile of failure creates a negativefeedback loop that threatens Facebooks future in other ways. Indeed, the more Facebooksdisappointment in the market is catalogued, the worse Facebooks image becomes. Not onlydoes that threaten to rub off on users, its bad for recruitment and retention of talentedhackers, who are the lifeblood of Zuckerbergs creation.
Yet the brilliant CEO can ignore the sadness and complaints of his shareholders thanks tothe super- voting stock he holds. This arrangement also was fully disclosed at the time of theoffering. Its a pity so few investors apparently bothered to do their homework.
61. What can be inferred about Facebook from the first paragraph?
A.Its market meltdown has been easily halted.
B.It has increased trade with the newspaper industry.
C.It has encountered utter failure since its stock debut.
D.Its shareholders have invested $ 50 billion in a social network.
62. The crises Facebook is facing_____
A.have been disclosed in the IPO prospectus
B.are the universal risks Wall Street confronts
C.disappoint its faithful users
D.have existed for a long time
63. To make its stock price reasonable, Facebook has to____
A.narrow the IPO price range
B.cooperate with Google
C.keep enormously profitable
D.invest additional $ 2.6 billion
64. It can be inferred from the context that the "Achilles heel" (Line 1, Para. 5) refersto____
A.deadly weakness
B.problem unsolved
C.indisputable fact
D.potential risk
65. What effect will Facebooks failure in the market have?
A.Its users benefits will be threatened.
B.Talented hackers will take down the website.
C.The CEO will hold the super-voting stock.
D.The companys innovation strength will be damaged.
參考答案
61.C)。本題考查第一段的主旨大意。此種題型可以使用排除法，將各選項代入原文來驗證對錯。A)“臉譜網(wǎng)的市場崩潰已被輕而易舉地制止了”，原文開篇指出，說臉譜網(wǎng)的市場崩潰將要結(jié)束未免太簡單了.A)與原文不符，故排除;B)“臉譜網(wǎng)增加了與報紙業(yè)之間的商務(wù)往來”，原文首段末句plus that of…中的that指的是value，意指臉譜網(wǎng)自登陸納斯達克以來，損失的價值等同于幾個大型互聯(lián)網(wǎng)企業(yè)加上大部分報業(yè)價值的總和，B)與原文不符，故排除;C)“臉譜網(wǎng)自股票上市以來遭遇了巨大失敗”，由第一段中的.burned，lost等詞可以推斷臉譜網(wǎng)上市后遭遇了巨大失敗，故為答案。
62.D)。事實細節(jié)題。D)‘‘已經(jīng)存在很長時間了”，與定位句中remain today的意思相同，故為答案。
63.C)。本題考查臉譜網(wǎng)如何才能使其制定的股價合理，題干中的reasonable對應(yīng)原文中的justify。定位句提到，要實現(xiàn)接近其公開募股說明書上的較低股價，比如每股28美元，這就要求臉譜網(wǎng)年收益增長要高達80%，并始終保持高利潤率，故答案為c)。
64.A)。本段提到，臉譜網(wǎng)現(xiàn)在還未解決如何有效地在移動設(shè)備上做廣告這一問題，而用手機登錄其網(wǎng)站的用戶數(shù)量卻不斷飆升，且文章通篇語義色彩都是消極的，故可推出此處應(yīng)指臉譜網(wǎng)商業(yè)模式中的致命軟肋，故答案為A)。
65.D)。由定位句可知，臉譜網(wǎng)在市場上的失意不僅會影響到用戶，還會影響招募和挽留天才黑客，而這些人正是扎克伯格創(chuàng)造力的命脈。由此推知，臉譜網(wǎng)的創(chuàng)新力會因其市場失意而受到損害，故答案為D)。
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