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1、1999年6月大学英语四级CET4真题及答案 section b directions: in this section, 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
2、 a), b), c) and d). then mark the corresponding letter on the answer sheet with a single line through the centre. passage one questions 11 to 13 are based on the passage you have just heard. 11.a) to protect persons and property. b) to collect taxes. c) to teach and train citizens. d) to save natura
3、l resources for future use. 12.a) by selling services that make life fortable. b) by selling land containing oil. c) by selling public lands. d) by selling coal and other natural products. 13.a) environmental pollution and protection. b) taxes and services for the public. c) police efforts to protec
4、t people. d) peoples attitude toward taxes. passage two questions 14 to 17 are based on the passage you have just heard. 14.a) he didnt like physics any more. b) his eyesight was too poor. c) physics was too hard for him. d) he had to work to support himself. 15.a) he was not happy with the new dire
5、ctor. b) he was not qualified to be an engineer. c) he wanted to travel. d) he found his job boring. 16.a) he wanted to work with his friend. b) he enjoyed travelling around the world. c) he wanted to go to spain. d) he was rejected by the engineering firm. 17.a) he enjoyed teaching english. b) he w
6、anted to earn more to support his family.page c) the owner of the school promised his a good position. d) he could earn more as a teacher than as a travel agent. passage three questions 18 to 20 are based on the passage you have just heard. 18.a) it can be cooked in many ways. b) it is delicious but
7、 inexpensive. c) it gives higher yields than other grain crops. d) it grows easily in various conditions. 19.a) fried potatoes b) tomato juice. c) sweet corn d) chocolate beans. 20.a) they led to the discovery of america. b) they made native american foods popular. c) they brought great wealth to sp
8、ain. d) they made native american life styles wellknown. part reading prehension (35 minutes) directions: there are 4 passages in this part. each passage is followed by some questions or unfinished statements. for each of them there are four choices marked a), b), c) and d). you should decide on the
9、 best choice and mark the corresponding letter on the answer sheet with a single line through the centre. questions 21 to 25 are based on the following passage: the biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the portable puter in business class. i
10、n the last 15 years, pilots have reported well over 100 incidents that could have been caused by electromagic interference. the source of this interference remains unconfirmed, but increasingly, experts are pointing the blame at portable electronic devices such as portable puters, radio and cassette
11、 players and mobile telephones. rtca, an organization which advises the aviation (航空) industry, has remended that all airlines ban (禁止) such devices from being used during critical stages of light, particularly takeoff and landing. some experts have gone further, calling for a total ban during all f
12、lights. currently, rules on using these devices are left up to individual airlines. and although some airlines prohibit passengers from using such equipment during takeoff and landing, most are reluctant to enforce a total ban, given that many passengers want to work during flights. the difficulty i
13、s predicting how electromagic fields might affect an aircrafts puters. experts know that portable devices emit radiation which affects those wavelengths which aircraft use for navigation and munication. but, because they have not been able to reproduce these effects in a laboratory, they have no way
14、 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 terrorists may use radio system in order to damage navigation equipment. as worrying, though, is the passenger who cant hear the instructions to turn o
15、ff his radio because the musics too loud. 21.the passage is mainly about_. a) a new regulation for all airlines b) the defects of electronic devices c) a possible cause of aircraft crashes d) effective safety measures for air flight 22.what is said about the over 100 aircraft incidents in the past 1
16、5 years? a) they may have been caused by the damage to the radio systems. b) they may have taken place during takeoff and landing. c) they were proved to have been caused by the passengers portable puters. d) they were suspected to have resulted from electromagic 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 interference b) the harmful e
