1、大学英语四级模拟试卷 26 及答案与解析 一、 Part I Writing (30 minutes) 1 For this part, you are allowed to write a composition on the topic on Waste. You should write at least 120 words and you should base your composition on the outline. 1当今社会存在大量的浪费的现象。 2有人认为 浪费能促进生产和消费，因而不应再受指责。 3我的观点。 二、 Part II Reading Comprehens
2、ion (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 state
3、ment contradicts the information given in the passage; NG (for NOT GIVEN) if the information is not given in the passage. 2 Mobile phones What Are Mobile Phones? A mobile phone, also known as a cellphone or cellular phone, is a portable electronic device which behaves as a normal telephone whilst be
4、ing able to move over a wide area(compare cordless phone which acts as a telephone only within a limited range). Cellphones allow connections to be made to the telephone network, normally by directly dialing the other partys number on an inbuilt keypad. Most current cellphones use a combination of r
5、adio wave transmission and conventional telephone circuit switching, though packet switching is already in use for some parts of the cellphone network, especially for services such as Internet access and WAP. Some of the worlds largest cellphone manufacturers include Alcatel, Audiovox, Kyocera(forme
6、rly the handset division of Qualcomm), LG, Motorola, Nokia, Panasonic(Matsushita Electric), Philips, Sagem, Samsung, Sanyo, Siemens, SK Teletech, and Sony Ericsson. There are also specialist communication systems related to, but distinct from cellphones, such as satellite phones and Professional Mob
7、ile Radio. Worldwide Deployment Cellphones have a long and varied history that stretches back to the 1950s, with hand-held devices being available since 1983. Due to their low establishment costs and rapid deployment, cellphone networks have since spread rapidly throughout the world, outstripping th
8、e growth of fixed telephony. In most of Europe, wealthier parts of Asia, Australia, and the US, cellphones are now widely used, with the majority of the adult, teenage, and even child population owning one. The number of cell phone subscribers in the US has reached over 190 million. The availability
9、 of Prepaid or pay as you go services, where the subscriber does not have to commit to a long term contract, has helped fuel this growth. Standardized Technology The cellphone has become ubiquitous because of the interoperability of cellphones across different networks and countries. This is due to
10、the equipment manufacturers all working to the same standard, particularly the GSM standard which was designed for Europe-wide interoperability. All European nations and some Asian nations chose it as their sole standard, while in Japan and South Korea another standard, CDMA, was selected. Cellphone
11、 Culture In less than twenty years, mobile phones have gone from being rare and expensive pieces of equipment used by businesses to a pervasive low-cost personal item. In many countries, cellphones now outnumber land-line telephones, with most adults and many children now owning cellphones. It is no
12、t uncommon for young adults to simply own a cell phone instead of a land-line for their residence. In some developing countries, where there is little existing fixed-line infrastructure, the mobile phone has become widespread. Social Life With high levels of mobile telephone penetration, a mobile cu
13、lture has evolved, where the phone becomes a key social tool, and people rely on their cellphone addressbook to keep in touch with their friends. Many people keep in touch using SMS, and a whole culture of “texting“ has developed from this. The commercial market in SMSs is growing. Many phones even
14、offer Instant Messenger services to increase the simplicity and ease of texting on phones. Entertainment The mobile phone itself has also become a totemic and fashion object, with users decorating, customizing, and accessorizing their cellphones to reflect their personality. Likewise, customized rin
15、gtones have been developed. Etiquette Cellphone etiquette has become an important issue with mobiles ringing at funerals, weddings, movies and plays. Users often speak at increased volume, with little regard for others nearby people. It has become common practice for places like libraries and movie
16、theatres to ban the use of cell phones, sometimes even installing jamming equipment to prevent them. Media Cameraphones and videophones that can capture video and take photographs are increasingly being used to cover breaking news. Stories like the London Bombings, the Boxing Day Tsunami and Hurrica
17、ne Katrina have been reported on by cameraphone users on news sites like NowPublic and photosharing sites like Flickr. Cellphone Features Cellphones are often packed with features that offer users far more than just the capability to send text messages and make voice calls. These may include interne
18、t browsing, music(MP3) playback, personal organisers, email, watch/alarm, built-in cameras, ringtones, security measures(e.g. pin codes), SIM blocks, games, radio, push to talk, infrared and bluetooth connectivity, and call registers. Network Features Though cellphones vary significantly from provid
19、er to provider, and even nation to nation(most noticeably in North America), all cellphones must generally accomplish the same tasks regardless. Cellphones must be connected to the system of landline phones. Cellphones must also be able to connect with each other just as easily, even if the two phon
20、es are not from the same mobile service provider. Consequently, all cellphone systems are comprised of two components; the handset, and the tower. The handset is the portable, referred to as the mobile phone, cellphone or a smartphone. The tower is a high-yield radio tower that the cellphones direct
21、 their radio communications to in order to connect to the network of telecommunications. It could also be a network of satellites. Network Working Process The Handset Handsets feature a low power transceiver that is typically designed to transmit voice and data, or analog audio only, up to a few kil
22、ometers under ideal situations to where the tower is located. The handset listens for an available tower. Once found, the handset informs that tower of its own unique identifier, and alerts the cellphone network that it is ready and standing-by to receive telephone calls. It then periodically repeat
23、s this information to the tower, and seeks out new towers over the duration it is powered on. The Tower Towers are large structures that feature a series of high power radio transmitters designed to broadcast their presence and availability, and relay communications to the mobile handsets. The tower
24、 features a much higher-powered radio transceiver array that allows it to provide a radio communications dialog with handsets dozens of kilometers away. The tower is connected to the landline telephone infrastructure by a high-capacity phone line, and may also be connected to a dedicated data line.
25、The tower can then route calls between the mobile handsets its serving, and telephone calls over the landline. Because the tower tracks and relays what mobile handsets it is servicing, it can inform the mobile network provider so that al any given time a call to a cellphone can quickly be traced to
26、the tower that is servicing that handset. The Data Stream Most cellphones dialog between the handset and the tower is comprised of a data stream of digitized audio. The technology driving this process can vary, and in nations with no standard or preference(such as the United States), many incompatib
27、le technologies exist. Not only do transmission standards potentially differ, but so do the radio frequencies. Some technologies include AMPS for analog, and TDMA, CDMA and GSM for digital communications. Though nations like the USA have generally avoided official standardization, most nations of th
28、e world have agreed upon the GSM data transmission protocol for cellphones, and a small range of possible frequencies that cellphones may operate on. Phones are classified based on the technology they use and the features they have. 2 The main difference between cordless phones and cellphones is tha
29、t cordless phones can only operate in a limited range. （ A） Y （ B） N （ C） NG 3 Satellite phones and Professional Mobile Radios are a kind of cellphone. （ A） Y （ B） N （ C） NG 4 Because cellphones are quick to deploy and cheap to establish, they have spread rapidly throughout the world. （ A） Y （ B） N
30、（ C） NG 5 Because American cellphone users can choose either the prepaid service or pay as you go, cellphone subscribers have increased in number. （ A） Y （ B） N （ C） NG 6 CDMA and GSM are the two main network services available in Australia. （ A） Y （ B） N （ C） NG 7 Texting is uncommon in Asian count
31、ries. （ A） Y （ B） N （ C） NG 8 Cellphone etiquette has become increasingly more important. （ A） Y （ B） N （ C） NG 9 Email, watch/alarm, built-in cameras, ringtones, and SIM blocks are all _ of cellphones. 10 Cellphones must not only be connected to the system of _ but also must be able to connect with
32、 each other just as easily, even if the two phones are not from the same mobile service provider. 11 Although most nations around the world have agreed upon GSM data transmission protocol for cellphones, the US has avoided official _. Section A Directions: In this section, you will hear 8 short conv
33、ersations 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, you must read the four choices marked A, B, C a
34、nd D, and decide which is the best answer. （ A） The woman was late for the interview. （ B） The woman felt nervous during the interview. （ C） The woman had to answer some tough questions. （ D） The woman interviewed a confident applicant who asked some difficult questions. （ A） The man and woman are s
35、tudents. （ B） The man thought the speech was more interesting than the woman did. （ C） The man and woman have been listening to a politician. （ D） The woman slept during the speech. （ A） At the airport. （ B） In an office. （ C） In a shop. （ D） In a car. （ A） The man and woman spent more time than exp
36、ected on certain points on the agenda. （ B） The man and woman have a lot of other things to do. （ C） The woman has many meetings today. （ D） Nothing on the agenda was important. （ A） Nothing. （ B） It is more interested in experienced people than qualified people. （ C） It is more interested in qualif
37、ied people than experienced people. （ D） It is equally interested in qualified people and experienced people. （ A） He is definitely learning Chinese. （ B） He is definitely learning English. （ C） He is probably learning a foreign language. （ D） He is learning interpersonal skills. （ A） It is going to
38、 rain. （ B） The woman feels cold. （ C） There is a cold wind. （ D） They dont have umbrellas. （ A） A teacher and student. （ B） An employer and employee. （ C） A grandparent and grandchild. （ D） Two new friends. （ A） They give too much information. （ B） They distract from the speaker. （ C） People get ti
39、red of them. （ D） They dont give enough information. （ A） A group of people she has never met before. （ B） A group of people she has met before. （ C） A group of young, junior people. （ D） A group of higher-ups. （ A） He may accept the womans advice. （ B） He gives more presentations than the woman. （
40、C） He is interested in increasing efficiency. （ D） He prefers slides with brighter backgrounds. （ A） Its interesting. （ B） Its French. （ C） Its well written. （ D） Its a useful source. （ A） Books written by French authors are the best sources. （ B） Paperback books are cheap. （ C） The Internet is a be
41、tter source of information. （ D） Most books are constantly being rewritten. （ A） It is time consuming and doesnt provide much information. （ B） A lot of the information is in foreign languages. （ C） There are not many websites devoted to such a specialist subject. （ D） There are no problems with usi
42、ng the Internet as a research tool. （ A） Because she hadnt heard of the writer at the time. （ B） Because it wasnt on any of the professorsreading lists. （ C） Because it was published after she had finished her research. （ D） Because it was only available in French. Section B Directions: In this sect
43、ion, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. （ A） To pass the exams. （ B） To apply for
44、 scholarships. （ C） To avoid making inaccurate claims. （ D） To avoid plagiarism. （ A） Research methods and lines of approach. （ B） Aims and objectives. （ C） Key problems and research questions. （ D） Works consulted and cited. （ A） The research methodology. （ B） A second language. （ C） Swimming skill
45、. （ D） First aid skill. （ A） To obtain its fibers. （ B） To drain the water. （ C） To make paper white. （ D） To measure the size of paper. （ A） The inner bark of a mulberry tree and wool. （ B） Wool and bamboo. （ C） Wood and bamboo. （ D） Grass and wood. （ A） The fact that by the 12th century papermakin
46、g reached Europe. （ B） The invention of moveable type in Asia. （ C） The arrival of the moveable type from Asia to Europe. （ D） The method of printing in large quantities. （ A） One to three million years ago. （ B） Two to three million years ago. （ C） One to three billion years ago. （ D） Two to three
47、billion years ago. （ A） Beijing. （ B） Nanjing. （ C） Hangzhou. （ D） Xian. （ A） Because Panda is also called Panda Bear. （ B） Because Panda looks like a bear. （ C） Because Panda has a cousin, Red Panda. （ D） Because Panda has Red Panda share many characteristics with both bears and raccoons. （ A） Sub
48、family. （ B） Bear family. （ C） Raccoon family. （ D） Not sure. Section C Directions: In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to f
49、ill in the blanks numbered from 36 to 43 with the exact words you have just heard. For blanks numbered from 44 to 46 you are required to fill in the missing information. For these blanks, you can either use the exact words you have just heard or write down the 37 Any mistake made in the 【 B1】 _ of a stamp raises its value to stamp 【 B2】 _. A mistake on a 【 B3】 _ stamp has made it worth a million and a half times its face value. Do you think it 【 B4】 _? Well, it is true. And this is how it 【 B5】
