职称英语考试

【单选题】Rescue PlatformIn the aftermath of the terrorist attacks on the World TradeCenter, 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)theEagle, 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 theEagle to_____(64) his ide
A、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 theEaglet.
A、change
B．move
C．turn

D、shut

网考网参考答案：B
网考网解析：
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