大学英语四六级考试选词填空专项训练题（1）A department store’s the land upon which the building is located, the labor of the employees, (1) ______ in the form of building, equipment and merchandise, and the management skills of the store managers. On a farm, the operation system is the transformation that occurs when a farmer’s (2) ______ (land, equipment, labor, etc.) are converted into such outputs as corn, wheat or milk. The exact form of the conversion process (3) ______ from industry to industry, but it is an (4) ______phenomenon that exists in every industry. Economists refer to this (5) ______ of resources into goods and services as the production function. For all operation systems, the general goal is to create some kind of value-added outputs that are worth more to consumers than just the sum of the inputs. To the consumers, the resulting products (6) ______ utility due to the form, the time, or the place of their availability from the conversion process.However, the process is subject to random changes. Unplanned or uncontrollable influences may cause the actual output to differ from planned output. Random fluctuations can arise from external disruption (fire, floods or lightning, for example) or from (7) ______ problems inherent in the conversion process. Inherent variability of equipment, material imperfections, and human errors all affect output quality (8)______. In fact, random variations are the rule rather than the exception in production processes; therefore, (9) _____ variation becomes a major management task.The function of the feedback is to provide (10) ______ linkages. Without some feedback of information, cannot control operations because they don' t know the results of their directions.注意：此部分试题在答题卡2上作答。

（2）Once the world embraced the automobile, the days of depending on horses, bicycles, ferries, and trains quickly slipped into the past. People were __11__ with the speed of the automobile but they were also enjoying the personal freedom that the automobile gave them.Owning a car gave people the freedom to go anyplace a road __12_. This allowed people to and at their own __13__. This independence gave the car a popular edge over buses and trains. The popularity of the automobile made it the __14__ of the transportation system. The automobile changed our lives when it created a giant industry that offered more and more jobs. The automobile made it possible for people to live in areas __15__ from their work place. This caused cities to grow and made suburban living more convenient. Of course, with more places to go, more __16__ roads had to be built. The automobile caused a __17__ effect.Jobs increased, industries grew, new industries developed, and cities appeared. Today the automobile industry continues to offer many __18__. Jobs are plentiful in this industry and improvements continue to be made to the automobile with new technologies.We have come a long way from that first __19__ carriage because of the cooperative efforts ofmany people in the last century. It will be interesting to see what the future holds for the automobile. We have already seen signs of the use of solar energy in this area. As long as man has a brain, the future of the automobile is __20__.A) backbone I) opportunities B) infinite J) snowball C) further K) definiteD) background L) developed E) led M) farther F) enjoyed N) impressedG) horseless O) pace H) developing(3)The biggest safety threat facing airlines today may not be a terrorist with a gun, but the man with the --21-- computer in business class. In the last 15 years, pilots have reported well over 100 --22-- that could have been caused by electromagnetic interference. The source of this interference --23-- unconfirmed, 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 during “ --24-- ” stages of flight, --25-- take-off and landing. Some experts , 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 take-off and landing, most are --26-- to enforce a total ban, given that many passengers want to work during flights.The difficulty is --27-- how electromagnetic fields might affect an aircraft’s computers. Experts know that portable device emit radiation which --28-- those wavelengths which aircraft 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 terrorists may use radio systems in order to damage navigation --29-- . As worrying, though, who can’t选词填空参考答案：（1）1.B2.M3.E4.J5.H6.A7.L8. F9. k 10.O（2）11. N 12. E 13. O 14. A 15. M 16. L 17. J 18. I 19. G 20. B（3）21. I 2 2. B 23. D 24. E 25. F 26. G 27. K 28. M 2 9. N 30. O。