[不定项选择题]共用题干 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 plat-form capable of flying vertically and hovering in the air_________(52)a helicopter. The plafform would rise up and down alongside a skyscraper and pick up people_________(53)in high stories。
The idea for the 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 pro-pellers. 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 buildings.Es-cape 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. 65._________
A.who
B.which
C.where
D.what

[不定项选择题]共用题干 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 plat-form capable of flying vertically and hovering in the air_________(52)a helicopter. The plafform would rise up and down alongside a skyscraper and pick up people_________(53)in high stories。
The idea for the 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 pro-pellers. 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 buildings.Es-cape 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. 64._________
A.tell
B.test
C.discuss
D.report

[不定项选择题]共用题干 A和B都是某服装外贸公司的高级业务员。A年富力强，豁达开朗，口头禅是“鄙人有家有业，不愁吃不愁穿，只求有朝一日能实现儿时的梦想，独自驱车横穿撒哈拉沙漠，与非洲土著居民围着篝火唱歌跳舞”。B则精力充沛，办事风风火火，喜欢对人指手画脚，发号施令，一直渴望有朝一日能独当一面，到公司在某国的销售分公司担任领导职务。后来，公司在销售部内部公开选拔一名分公司经理，但分公司的条件、待遇都比总公司差。A和B均申请了突尼斯销售分公司经理的职务，但后来B认为自己能在与A的竞争中获胜的概率微乎其微，于是主动撤回了申请，A如愿以偿地到了非洲，一边开拓业务，一边体验风俗民情。 根据弗罗姆的期望理论，B开始强烈要求去突尼斯销售分公司，后来又因为担心竞争不过A而自动退出，这一现象说明了()。
A.效价高，期望高
B.效价低，期望高
C.效价高，期望低
D.效价低，期望低