1、公共英语四级-计算机与信息(二)及答案解析(总分：100.00，做题时间：90 分钟)一、BSection Liste(总题数：0，分数：0.00)二、BPart A/B(总题数：1，分数：5.00)For Questions 1 5, you will hear a passage, while you listen, fill out the table with the information you have heard. Some of the information has been given to you in the table. Write only 1 word in e
2、ach numbered box.Information about writing by computerWe write to communicate with relatives and _.UU 1 /U/UStudents are e-mailing their professors to receive and discuss theirclassroom _.UU 2 /U/UWe write to preserve our family histories so our children and grandchildrencan learn and appreciate the
3、ir _.UU 3 /U/UA hand-written note to a friend or a family member is the best way tocommunicate important _.UU 4 /U/UThis writing practice brings rewards that cant be seen in bank _. UU 5 /U/U（分数：5.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_三、BPart B/B(总题数：1，分数：5.00)For Questions 6 10, you will hear a tal
4、k about Charles Csuri. While you listen, complete the sentences. Use not more than 3 words for each answer.Charles Csuri has been a part of many _. UU 1 /U/UHe made his mark as a pioneer in _. UU 2 /U/UThrough the computer, Csuri has been able toexplore a new _.UU 3 /U/UThe computer enables him to s
5、culpt in _. UU 4 /U/UNumerous grants for various projects allowed him toUU 5 /U/Utrain students in computer graphics and _.（分数：5.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_四、BPart C/B(总题数：3，分数：10.00)You will hear three passages. Before listening to each one, read the questions related to it. While listen
6、ing, answer each question by choosing A, B, C or D. You will hear each piece ONLY ONCE.（分数：3.00）(1).What do most people worry about on the Internet according to this passage? A. Lots of stolen credit cards were sold on the Internet. B. Cheat on the Internet. C. Many web sites are destroyed. D. Many
7、illegal web sites are on the Internet.（分数：1.00）A.B.C.D.(2).How can thieves get credit card information? A. The customers give them the information. B. The customers sell the information to them. C. The thieves steal the information from web sites. D. The thieves buy the information from credit card
8、firms.（分数：1.00）A.B.C.D.(3).What could you do if you doubt the online security of sending credit card information? A. Give your credit card information over the telephone. B. Send credit card information in the web site. C. Ask about the credit card companys online rules by telephone. D. Use MasterCa
9、rd to shop online.（分数：1.00）A.B.C.D.（分数：3.00）(1).Which would be the best title for this passage? A. Life at Home in the year 2040. B. Sensors and Computers. C. The Development of Science and Technology. D. Modern Life in 2040.（分数：1.00）A.B.C.D.(2).Who can help you when you leave the room without turni
10、ng off the lights and heaters? A. A Computer. B. A Key. C. A sensor. D. The neighbors.（分数：1.00）A.B.C.D.(3).Which is NOT the role that a computer plays? A. Fireman. B. Policeman. C. Entertainer. D. Tamper.（分数：1.00）A.B.C.D.（分数：4.00）(1).We can learn from the passage that those at the computing room in
11、the middle of the night are _. A. students working on a program B. students using computers to amuse themselves C. hard-working computer science majors D. students deeply fascinated by the computer（分数：1.00）A.B.C.D.(2).Which of the following is NOT true about those young computer “hackers“? A. Most o
12、f them are top students majoring in computer programming. B. For them, computer programming is the only purpose for their life. C. They can stay with the computer for nearly two days on end. D. Their “love“ for the computer is so deep that they want to be near their machines even when they sleep.（分数
13、：1.00）A.B.C.D.(3).The authors attitude towards the “hacker“ phenomenon can be described as _. A. affirmative B. contemptuous C. anxious D. disgusted（分数：1.00）A.B.C.D.(4).Which of the following may be the most appropriate title for the passage? A. The Charm of Computer Science B. A New Type of Electro
14、nic Toys C. Compulsive Computer Programmers D. Computer Addicts（分数：1.00）A.B.C.D.五、BSection Use o(总题数：1，分数：20.00)Read the following text. Choose the best word or phrase marked A, B, C or D for each numbered blank.A great deal of attention is being paid today to the so-called digital dividethe divisio
15、n of the world into the info (information) rich and the info poor. And that U U 1 /U /Udoes exist today. My wife and I lectured about this looming danger twenty years ago. What was less U U 2 /U /Uthen, however, was the new, positive U U 3 /U /Uthat work against the digital divide. U U 4 /U /U, ther
16、e are reasons to be U U 5 /U /U.There are technological reasons to hope the digital divide will narrow. As the Internet becomes more and more U U 6 /U /U, it is in the interest of business to universalize accessafter all, the more people online, the more potential U U 7 /U /Uthere are. More and more
17、 U U 8 /U /U, afraid their countries will be left U U 9 /U /U, want to spread Internet access. Within the next decade or two, one to two billion people on the planet will be U U 10 /U /Utogether. As a result, I now believe the digital divide will U U 11 /U /Urather than widen in the years ahead. And
18、 that is very good news because the Internet may well be the most powerful tool for U U 12 /U /Uworld poverty that weve ever had.Of course, the use of the Internet isnt the only way to U U 13 /U /Upoverty. And the Internet is not the only tool we have. But it has U U 14 /U /Upotential.To U U 15 /U /
19、Uadvantage of this tool, some poor countries will have to get over their outdated anti-colonial prejudices U U 16 /U /Urespect to foreign investment. Countries that still think foreign investment is a/an U U 17 /U /Uof their sovereignty might well study the history of U U 18 /U /U(the basic structur
20、al foundations of a society) in the United States. When the United States built its industrial infrastructure, it didnt have the capital to do so. And that is U U 19 /U /UAmericas Second Wave infrastructureU U 20 /U /Uroads, harbors, highways, ports and so onwere built with foreign investment.（分数：20
21、.00）(1). A. divide B. information C. world D. lecture（分数：1.00）A.B.C.D.(2). A. obscure B. visible C. invisible D. indistinct（分数：1.00）A.B.C.D.(3). A. forces B. obstacles C. events D. surprises（分数：1.00）A.B.C.D.(4). A. Seriously B. Entirely C. Actually D. Continuously（分数：1.00）A.B.C.D.(5). A. negative B.
22、 optimistic C. pleasant D. disappointed（分数：1.00）A.B.C.D.(6). A. developed B. centralized C. realized D. commercialized（分数：1.00）A.B.C.D.(7). A. users B. producers C. customers D. citizens（分数：1.00）A.B.C.D.(8). A. enterprises B. governments C. officials D. customers（分数：1.00）A.B.C.D.(9). A. aside B. out
23、 C. off D. behind（分数：1.00）A.B.C.D.(10). A. netted B. worked C. put D. organized（分数：1.00）A.B.C.D.(11). A. decrease B. narrow C. neglect D. low（分数：1.00）A.B.C.D.(12). A. containing B. preventing C. keeping D. combating（分数：1.00）A.B.C.D.(13). A. win B. detail C. defeat D. fear（分数：1.00）A.B.C.D.(14). A. en
24、ormous B. countless C. numerical D. big（分数：1.00）A.B.C.D.(15). A. bring B. keep C. hold D. take（分数：1.00）A.B.C.D.(16). A. at B. with C. of D. for（分数：1.00）A.B.C.D.(17). A. offence B. investment C. invasion D. insult（分数：1.00）A.B.C.D.(18). A. construction B. facility C. infrastructure D. institution（分数：1
25、.00）A.B.C.D.(19). A. why B. where C. when D. how（分数：1.00）A.B.C.D.(20). A. concerning B. concluding C. according D. including（分数：1.00）A.B.C.D.六、BSection Readi(总题数：0，分数：0.00)七、BPart A/B(总题数：1，分数：10.00)Read the following text. Answer the questions below the text by choosing A, B, C or D.By almost any m
26、easure, there is a boom in Internet-based instruction. In just a few years, 34 percent of American universities have begun offering some form of distance learning (DL), and among the larger schools, its closer to 90 percent. If you doubt the popularity of the trend, you probably havent heard of the
27、University of Phoenix. It grants degrees entirely on the basis of online instruction. It enrolls 90000 students, a statistic used to support its claim to be the largest private university in the country.While the kinds of instruction offered in these programs will differ, DL usually signifies a cour
28、se in which the instructors post syllabi (课程大纲), reading assignments, and schedules on websites, and students send in their assignments by e-mail. Generally speaking, face-to-face communication with an instructor is minimized or eliminated altogether.The attraction for students might at first seem o
29、bvious. Primarily, theres the convenience promised by courses on the net; you can do the work, as they say, in your pajamas (睡衣). But figures indicate that the reduced effort results in a reduced commitment to the course. While dropout rates for all freshmen at American universities is around 20 per
30、cent, the rate for online students is 35 percent. Students themselves seem to understand the weaknesses inherent in the setup. In a survey conducted for E-Cornell, the DL division of Cornell University, less than a third of the respondents expected the quality of the online course to be as good as t
31、he classroom course.Clearly, from the schools perspective, theres a lot of money to be saved. Although some of the more ambitious programs require new investments in servers and networks to support collaborative software, most DL courses can run on existing or minimally upgraded (升级) systems. The mo
32、re students who enroll in a course but dont come to campus, the more the school saves on keeping the lights on in the classrooms, paying doorkeepers, and maintaining parking lots. And, while theres evidence that instructors must work harder to run a DL course for a variety of reasons, they wont be p
33、aid any more, and might well be paid less.（分数：10.00）(1).What is the most striking feature of the University of Phoenix? A. All its courses are offered online. B. Its online courses are of the best quality. C. It boasts the largest number of students on campus. D. Anyone taking its online courses is
34、sure to get a degree.（分数：2.00）A.B.C.D.(2).According to the passage, distance learning is basically characterized by _. A. a considerable flexibility in its academic requirements B. the great diversity of students academic backgrounds C. a minimum or total absence of face-to-face instruction D. the c
35、asual relationship between students and professors（分数：2.00）A.B.C.D.(3).Many students take Internet-based courses mainly because they can _. A. earn their academic degrees with much less effort B. save a great deal on traveling and boarding expenses C. select courses from various colleges and univers
36、ities D. work on the required courses whenever and wherever（分数：2.00）A.B.C.D.(4).What accounts for the high dropout rates for online students? A. There is no strict control over the academic standards of the courses. B. The evaluation system used by online universities is inherently weak. C. There is
37、 no mechanism to ensure that they make the required effort. D. Lack of classroom interaction reduces the effectiveness of instruction.（分数：2.00）A.B.C.D.(5).According to the passage, universities show great enthusiasm for DL programs for the purpose of _. A. building up their reputation B. cutting dow
38、n on their expenses C. upgrading their teaching facilities D. providing convenience for students（分数：2.00）A.B.C.D.八、BPart B/B(总题数：1，分数：15.00)Read the following text carefully and then translate the underlined segments into Chinese.June 8th, 2011, was World IPv6 Daythe first major deployment of Intern
39、et Protocol version 6. Hundreds of Internet service providers and Web companies tested IPv6 on their websites. This new numbering system for Internet addresses has been available for years. But very few companies have switched to it. U U 1 /U /UUYet the old system could run out of addresses this yea
40、r because of all the growth in online devices./U Doug Szajda, a computer science professor at the University of Richmond in Virginia, explains.Doug Szajda says: “Its sort of like the post office of the Internet. It tells you how to get information from one computer to another. Currently, and since a
41、round 1980, the addressing system has been IP version 4. But the problem with that is that weve run out of addresses. So its almost as if, when a new house is built, you cant give it an address because you dont have any more.“IPv4 was designed to handle just over four billion IP addresses. Doug Szaj
42、da says that seemed like more than enough. Doug Szajda says: “U U 2 /U /UUAt the time that IP version 4 was designed, the designers were anticipating perhaps thousands of users of the Internet someday, and certainly thinking that four billion addresses were many more than we would ever need.“/U Yet
43、now, not just computers but smartphones, cars, televisions, game systems and plenty of other devices all connect to the Internet. Each uses a different IP address.The basic standards for IPv6 were first published in 1998. U U 3 /U /UUDoug Szajda says its most important feature is the ability to prov
44、ide what seems like an unlimited number of IP addresses./U Well, there is a limitthree hundred forty trillion trillion trillion in fact, or three hundred forty undecillion. Thats three hundred forty followed by thirty-six zeros. Experts say the challenge now is to get the world to use it. Mr. Szajda
45、 says that was the real purpose of last weeks World IPv6 Day sponsored by the Internet Society. Doug Szajda says: “U U 4 /U /UUIt was less a worldwide test than a means of generating some incentive for vendors to realize we cant drag our feet anymore. This has to happen.“/UU U 5 /U /UUThe process of
46、 switching to IPv6 can be complex and costly, which could explain why so few companies have made the switch./U CompTIA, the Computing Technology Industry Association, recently did an opinion study. The group talked to more than four hundred information technology and business leaders in the United State
