2015年职称英语理工类C级考试真题（文字版）

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　　下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。(第51-65题，每题1分，共15分)

2015年职称英语理工类C级考试真题（文字版）

　　Rescue Platform

　　In the aftermath of the terrorist attacks on the World Trade Center,security experts are trying to develop new ways of rescuing people from burning skyscrapers.One (51)is a platform capable of flying vertically and hovering in the air (52)a helicopter.The platform would rise up and down alongside a skyscraper and pick up people (53)in high stories.

　　The idea for vertical takeoff platform was hatched(策划)more than ten years ago by a Russian aerospace engineer,David Metreveli,who has since moved to Israel.Metreveli's design (54)the Eagle,calls for two jet engines that(55)four large horizontal propellers.The spinning of the propellers (56)the necessary lift,or upward force,to raise the platform.The more (57)is supplied to the propellers,the higher the platform(58)Moving the platform sideways involves(59)differing amounts of power to each propeller.

　　Helicopters are now used in some(60)to get people out of burning building.Escape baskets slung from them dangle beside the building for people to climb into.(61),the baskets cannot reach every floor of a building(62)the ropes from which they hang become unstable(63)a certain length.

　　So far,Metreveli has built a small-scale model of the Eagle to(64)his idea.In the wake of September 11,he has been able to secure enough funding to start building a larger,4-meter by 4-meter prototype,(65)he calls the Eaglet.

　　51.A.idea B.skill C.building D.improvement

　　52.A.silks B.unlike C.like D.likely

　　53.A.XXX B.trapped C.climbed D.raised

　　54.A.linked B.called C.equaled D.described

　　55.A.change B.move C.turn D.shut

　　56.A.sends B.keeps C.opens D.generates

　　57.A.power B.sense C.feature D.model

　　58.A.stays B.rises C.stars D.runs

　　59.A.reducing B.comparing C.developing D.applying

　　60.A.kinds B.cases C.stories D.products

　　61.A.Unfortunately B.Uncertainly C.Unimportantly D.Unexpectedly

　　62.A.before B.because C.until D.however