大学英语六级分类模拟题470及答案解析.doc

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1、大学英语六级分类模拟题 470 及答案解析(总分：394.50，做题时间：90 分钟)一、Part Writing(总题数：1，分数：35.00)1.Directions: For this part, you are allowed 30 minutes to write an essay commenting on the saying “No man is an island. “ You can cite examples to illustrate your point. You should write at least 150 words but no more than 200

2、 words. （分数：35.00）_二、Part Reading Compr(总题数：0，分数：0.00)三、Section A(总题数：1，分数：20.00)Internet of Things Era Is ComingA. From meat thermometers monitored with a smart phone to Wi-Fi-equipped dog collars, devices and services in homes and businesses are increasingly being connected to the Internet, a long

3、-awaited trend that is causing a surge of optimism in the tech sector. B. Large and small companies are churning out a number of Internet-connected gadgets, a central theme as the Consumer Electronics Show opens this week in Las Vegas. Devices on the market or the drawing board include smart door lo

4、cks, toothbrushes, wristwatches, fitness trackers, smoke detectors, surveillance cameras, ovens, toys and robots. C. But the much-ballyhooed Internet of Things still is largely a collection of possibilities. Sales of the new-wave products are threatened by a number of stumbling blocks that could slo

5、w investmentfrom conflicting wireless-communications standards to debates about how much processing power should be built into gadgets. D. Some industry executives say privacy concerns may be even more serious, without a consensus on how to exploit all the data that could be generated by a flood of

6、new sensors and Internet-connected video cameras. “Big data is worth absolutely nothing without big judgment“, says Joseph Bradley, director of what Cisco Systems Inc. calls its “Internet of Everything“ consulting practice. Nonetheless, heavyweights like General Electric Co., Intel Corp. and Qualcom

7、m Inc. are jockeying for position. “I“ve never seen our industry go as fast as it is, or create as much value,“ says Marc Benioff, chief executive of S Inc. “It“s a very magical time.“ E. Cisco estimates that the number of devices connected to the Internet will swell from about 10 billion today to 5

8、0 billion by 2020, as wireless links spread beyond smart phones and PCs to many other kinds of devices. The Silicon Valley giant“s chief executive, John Chambers, is expected to discuss the opportunities Tuesday in a keynote speech at CES. F. Gartner Inc. puts the number of connected devices at fewe

9、r than 30 billion, but sees $309 billion in additional revenue for product and service suppliers by 2020 and $1.9 trillion in total economic impact from cost savings, improved productivity and other factors. G. The vision of a world of smart gadgets emerged even before the Web. A.C. “Mike“ Markkula,

10、 a co-founder of Apple Computer Inc., had a brainstorm in the mid-1980s about combining functions for networking and controlling devices on a single chip. Those “neurons“, as they came to be called, were expected to spread widely once their cost fell to around $1. But the company he founded, Echelon

11、 Corp., didn“t hit that target and has had a bumpy history. “I keep kicking myself,“ he says, “I was 20 years too soon.“ H. Chip makers did steadily push down the cost of adding intelligence to everyday gadgets, often to less than $5. Another driver has been the onslaught of smart phones and tablets

12、, which can serve as handy Web-connected remote controls for devices in the home and workplace. Potential benefits range from fairly prosaic to profound. Consumers, for example, can now use smart phones to remotely check if they locked doors, left the lights on or turned down the thermostat. Retaile

13、rs can help smart phone users find goods on store shelves, and wirelessly pitch sales promotions. Parking meters can communicate with smart phone users. I. Companies like Silver Spring Networks Inc. sell wireless meters to manage energy usage, while GE exploits data generated by sensors to monitor t

14、he health of jet engines and gas turbines. The opportunities have attracted a number of startups, some of which have managed to raise substantial funding from venture capitalists. The best-known is Nest Labs Inc., a maker of Wi-Fi-equipped thermostats and smoke detectors led by former Apple Inc. exe

15、cutive Tony Fadell. Another example is August, which is developing smart door locks and has raised $10 million to date. J. Others are leaning heavily on crowd funding sites like Kickstarter and Indiegogo, as investors worry about the potential costs of hatching hardware startupsand the likelihood th

16、at entrenched companies will adapt their existing products to dominate Internet-of-Things opportunities. “The body count is quite high of startups that have made hardware,“ says Jason Johnson, August“s CEO and founder of the Internet of Things Consortium. K. For those reasons, some startups are deve

17、loping new services to help manage connected devices, while existing companies are modifying business models to exploit the data likely to flow from them. Insurance companies, for example, can respond to sensors and wireless connections in cars to charge drivers by the mile and speed they drive, ins

18、tead of by where they live. “The value of the devices will be secondary to the services they enable,“ says Thomas Lee, a Stanford University professor of electrical engineering and co-founder of Ayla Networks Inc., an online service hoping to help turn ordinary products into cloud-connected devices.

19、 L. So far, however, smart-home products seem mainly to be attracting technology enthusiasts. Only 1% to 2% of American consumers surveyed by Forrester Research in mid-2013 were using five widely touted home-automation offerings. Some 28% of respondents said they were interested in controlling appli

20、ances with a smartphone, but 53% weren“t. Other hurdles face companies tackling the Internet of Things, including a fragmented assortment of wireless communications technologies. In home automation, for example, device makers face options that include Insteon, Wi-Fi, Bluetooth, Zigby, Z-Wave and ear

21、lier proprietary technologies. M. “It“s not that things aren“t getting connectedthey are getting connected badly,“ says Rob Chandhok, president of Qualcomm“s interactive platforms unit. Qualcomm is trying to rally hardware makers around a technology called AllJoyn to help devices discover each other

22、 and collaborate. Meanwhile, startups trying to sell their own control devices are going through contortions; Revolv Inc., for example, is marketing a hub that can communicate using seven different radio technologies. N. Mike Soucie, Revolv“s co-founder and marketing head, says agreements on key com

23、munications technologies may be five to 10 years away. Any standards that do emerge are likely to apply to a single marketlike home security or transportationrather than to many industries, predicts Gilad Meiri, chief executive of Neura Inc., a startup developing technology to help orchestrate conne

24、cted devices. O. Assuming devices can communicate, manufacturers need conventions for telling them what to do and how to work together. Meanwhile, other basic questions remainlike just how much intelligence should everyday devices have? Companies like Intel and ARM Holdings PLC, which license techno

25、logy to chip makers, stress the benefits brought by processors that can run sophisticated software and protocols that allow them to connect directly to the Internet. P. But others believe such complex technology can reduce the reliability of home appliances and other devices, while raising the odds

26、of bugs or security holes that could be exploited by attackers. They prefer simpler chips called microcontrollers, which are harder to reprogram to do unintended things. “I want my refrigerator to be a thing; I don“t want it to be a computer,“ says Shane Dyer, chief executive of Arrayent Inc., a sta

27、rtup marketing a Web-based service to manage microcontroller-powered devices. Q. Moreover, the data generated by connected devices could be used in ways consumers don“t like and create liabilities for companies. Chris Bruce, chief executive of Sproutlinga startup developing a smart phone-connected b

28、aby monitorwonders if services that store data from connected devices might get subpoenas if something bad happens. There are at least as many questions about the fast-growing flood of data from Interact-connected security cameras. R. “It is more than a little creepy,“ says David Alan Grier, an asso

29、ciate professor of science and technology policy at George Washington University and 2013 president of the IEEE Computer Society. “There is going to have to be some clear thinking and some clear understanding of what is going on.“（分数：20.00）(1).Nest Labs Inc. has produced Wi-Fi-equipped thermostats a

30、nd smoke detectors.（分数：2.00）(2).According to Cisco, with the exploitation of wireless links, the amount of Internet-connected devices will increase 40 billion by 2020.（分数：2.00）(3).In order to make use of the data generated from connected devices, companies begin to revise business models.（分数：2.00）(4

31、).Someone prefers simpler chips called microcontrollers to the Interact of things technology.（分数：2.00）(5).A large amount of Internet-connected devices are presented in Consumer Electronics Show held in Las Vegas.（分数：2.00）(6).Technology companies are optimistic about the future of the Internet-connec

32、ted devices.（分数：2.00）(7).The detrusion of smart phones and tablets makes the cost of intelligence to everyday devices become less.（分数：2.00）(8).Various sensors and Internet-connected video cameras arouse people“s worry about their privacy.（分数：2.00）(9).On the basis of Forrester Research in 2013, more

33、than half respondents are not interested in smart-home products.（分数：2.00）(10).The data generated by Interact-connected security cameras poses many problems.（分数：2.00）四、Section B(总题数：0，分数：0.00)五、Passage One(总题数：2，分数：91.00)Is it any wonder that America is also a country of dangerously overweight people

34、? According to a recent study by the National Centre for Health Statistics, the number of adults characterized as overweight in the United States has jumped to an astonishing one-third of the population. Overweight in this case means being about 20 percent or more above a person“s desirable weight.

35、Since the figures for “desirable weight“ have moved upward over the last decade or so, total poundageeven at 20 percent overmay be considerable. So are the attendant health risks. Excess weight has been linked to cardiovascular disease, hypertension, adult-onset diabetes and some forms of cancer, am

36、ong other diseases. Once, when work and school and the grocery store were a two-mile hike away, Americans could afford the calories they consume. But not now, not when millions spend four or five hours a day in front of a TV setalong with a bag of chips, a bowl of buttered popcorn and a six-packand

37、there“s a car or two in every driveway. “There is no commitment to obesity as a public health problem,“ said Dr. William Dietz, director of clinical nutrition at the New England Medical Centre in Boston. “We“ve ignored it, and blamed it on gluttony and sloth.“ If one definition of a public health pr

38、oblem is its cost to the nation, then obesity qualifies. According to a study done by Dr. Graham A. Colditz, who teaches at Harvard Medical School, it cost America an estimated $68.8 billion in 1990. But what“s wrong blaming it on gluttony and sloth? True, some unfortunate overweight people have an

39、underlying physical or genetic problem. But for most Americans, the problem is with two of the seven deadly sins. Losing weight is a desperately difficult business. Preventing gain, however, is not. Consumer information is everywhere and there can be few adults who truly believe that hot dogs, fries

40、, a soda and a couple of Twinkies make a good lunch. But they eat them anyway. As more and more Americans became educated to the risks of smoking, more and more Americans gave up the habit. Now it appears that Americans need an intensive education in the risks of stuffing themselves and failing to e

41、xercise as well. Given the seductiveness of chocolate and cheese, the couch and the car, that habit will be hard to break. But if an ounce of prevention can obviate a pound of fat, it is well worth the struggle.（分数：20.00）(1).The author setting up the standard of overweight people based on the fact t

42、hat _.（分数：4.00）A.the number of overweight people has astonishingly increasedB.people have a different idea about their desirable weight nowC.overweight becomes a threat to people“s healthD.the overweight problem has long been studied(2).By saying “So are the attendant health risks“ in Paragraph 3, t

43、he author means _.（分数：4.00）A.America suffers health risks as well as the overweight problemB.health risks resulted from overweight are serious tooC.overweight is classified as one of the health problemsD.people have also paid much attention to the possible health risks(3).What does William Dietz thi

44、nk of overweight?（分数：4.00）A.Overweight should be treated as a public health problem.B.Overweight should be attributed to gluttony and sloth.C.Overweight has much to do with nutritional problems.D.Overweight has nothing to do with the overuse of cars.(4).Most Americans believe that _.（分数：4.00）A.the o

45、verweight problem has cost the nation muchB.obesity is related to one“s physical conditionsC.people who are overweight are unfortunateD.gluttony and sloth are two deadly sins(5).In order to solve the overweight problem, the author suggests that everyone need to _.（分数：4.00）A.be taught to prevent gain

46、ing weightB.be educated to lose weight effectivelyC.seek help from consumer informationD.know what makes a healthy dinnerThe act of Googling oneself has become the digital age“s premiere guilty pleasurean activity enjoyed by all and admitted by few. The phenomenon has even been the subject of schola

47、rly research. Last year, a study concluded that the practice of self-Googling can partly be traced to a rise in narcissism (自恋) in society, but that it is also an attempt by people to identify and shape their personal online “brand“. The reason people search for themselves is that they“re curious ab

48、out what other people see when they search for their name. One problem is they don“t have any control over the search results and they will never appear on the first page of the search results. If your name is Brian Jones and you“re not the former Rolling Stones guitarist, you don“t exist. To give p

49、eople a bit more control over search results, Google introduced a feature this week called a “Google profile“ which users can create, so that a little personal information appears at the bottom of US name search pages. Once users create a Google profile, their names, occupation, locations and photos appear in a box on the first page of the search results for their names. Besides, there“s a link to a full Google profile page that in many ways resembles a Fac