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1、新东方在线 CET4 通关班网络课堂电子教材系列 阅读CET4 阅读通关班电子教材主讲：陈科欢迎使用新东方在线电子教材教材说明：本电子教材 word 文档下面的页码跟教材完全一样，学员只需根据老师说的多少页找到相应的页面学习即可。请提前预习、认真学习、及时复习，祝广大学子考试取得成功！1第一部分 阅读理解全真试题Unit 1Part II Reading Comprehension(35 minutes)Directions: There are 4 passages in this part. Each passage is followed by some questions or un
2、finished 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.Passage OneQuestions 21 to 25 are based on the following passage.The biggest safety
3、threat facing airlines today may not be a terrorist with a gun, but the man with the portable computer in business class. In the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagnetic interference. The source of this interference remains unconfirme
4、d, but increasingly, experts are pointing the blame at portable electronic device such as portable computers, radio and cassette players and mobile telephones.RTCA, an organization which advises the aviation (航空) industry, has recommended that all airlines ban (禁止 ) such devices from being used duri
5、ng “critical” stages of flight, particularly take-off and landing. Some experts have gone further, calling for a total ban during all flights. Currently, rules on using these devices are left up to individual airlines. And although some airlines prohibit passengers from using such equipment during t
6、ake-off and landing, most are reluctant to enforce a total ban, given that many passengers want to work during flights.The difficulty is predicting how electromagnetic fields might affect an aircrafts computers. Experts know that portable device emit radiation which affects those wavelengths which a
7、ircraft use for navigation and communication. But, because they have not been able to reproduce these effects in a laboratory, they have no way of knowing whether the interference might be dangerous or not.The fact that aircraft may be vulnerable (易受损的) to interference raises the risk that terrorist
8、s may use radio systems in order to damage navigation equipment. As worrying, though, is the passenger who cant hear the instructions to turn off his radio because the musics too loud.21. The passage is mainly about _.2A) a new regulation for al airlinesB) the defects of electronic devicesC) a possi
9、ble cause of aircraft crashesD) effective safety measures for air flight22. What is said about the over 100 aircraft incidents in the past 15 years?A) They may have been caused by the damage to the radio systems.B) They may have taken place during take-off and landing.C) They were proved to have bee
10、n caused by the passengers portable computers.D) They were suspected to have resulted from electromagnetic interference.23. Few airlines want to impose a total ban on their passengers using electronic devices because _.A) they dont believe there is such a danger as radio interferenceB) the harmful e
11、ffect of electromagnetic interference is yet to be provedC) most passengers refuse to take a plane which bans the use of radio and cassette playersD) they have other effective safety measures to fall back on24. Why is it difficult to predict the possible effects of electromagnetic fields on an airpl
12、anes computers?A) Because it is extremely dangerous to conduct such research on an airplane.B) Because it remains a mystery what wavelengths are liable to be interfered with.C) Because research scientists have not been able to produce the same effects in labs.D) Because experts lack adequate equipme
13、nt to do such research.25. It can be inferred from the passage that the author _.A) is in favor of prohibiting passengers use of electronic devices completelyB) has overestimated the danger of electromagnetic interferenceC) hasnt formed his own opinion on this problemD) regards it as unreasonable to
14、 exercise a total ban during flightPassage TwoQuestions 26 to 30 are based on the following passage.The rise of multinational corporations (跨国公司), global marketing, new communications technologies, and shrinking cultural differences have led to an unparalleled increase in global public relations or
15、PR.Surprisingly, since modern PR was largely an American invention, the U.S. leadership in public relations is being threatened by PR efforts in other countries. Ten years ago, for example, the worlds top five public relations agencies were American-owned. In 1991, only one was. The British in parti
16、cular are becoming more sophisticated and creative. A recent survey found that more than half of all British companies include PR as part of their corporate (公司的) planning activities, compared to about one-third of U.S. companies. It may not be long before London replaces New York as the capital of PR.3Why is America lagging behind in the global PR race? First, Americans as a whole tend to be fairly pr
