问题 问答题

“为了您和他人的安全,请您不要在飞机上使用手机和手提电脑.”这句提醒警示语是乘过飞机的游客都听到过的,因为有些空难事故就是由于某些乘客在飞行的飞机中使用手机所造成的.1996年、1998年都出现过此类问题,1999年广州白云机场飞机降落时,机上有四位旅客同时使用手机,使飞机降落偏离了8度,险些造成事故,请问为什么在飞机上不能使用手机和手提电脑呢(包括游戏机)?

答案

由于手机使用时要发射电磁波,对飞机会产生电磁干扰,而飞机上的导航系统非常复杂,抗干扰能力又不是很强,若在飞机上使用手机,将对飞机产生电磁干扰,后果不堪设想,所以不能在飞机上使用手机.同理也不能使用手提电脑、游戏机等

由于手机使用时要发射电磁波,对飞机会产生电磁干扰,而飞机上的导航系统非常复杂,抗干扰能力又不是很强,若在飞机上使用手机,将对飞机产生电磁干扰,后果不堪设想,所以不能在飞机上使用手机.同理也不能使用手提电脑、游戏机等

选择题
阅读理解

In only two decades Asian Americans have become the fastest-growing US minority. As their children began moving up through the nation’s schools, it became clear that a new class of academic achievers was forming. Their achievements are reflected in the nation’s best universities, where mathematics, science and engineering departments have taken on a decidedly Asian character. This special liking for mathematics and science is partly explained by the fact that Asian-American students who began their educations abroad arrived in the US with a solid grounding in mathematics but little or no knowledge of English.They are also influenced by the promises of a good job after college. Asians feel there will be less unfair treatment in areas like mathematics and science because they will be judged more objectively. And the return on the investment in education is more immediate in something like engineering than with an arts degree.

Most Asian-American students owe their success to the influence of parents who are determined that their children take full advantage of what the American educational system has to offer. An effective measure of parental attention is homework. Asian parents spend more time with their children than American parents do, and it helps. Many researchers also believe there is something in Asian culture that causes success, such as ideals that stress family values and emphasize education.

Both explanations for academic success worry Asian Americans because of fears that they feed a typical racial image. Many can remember when Chinese, Japanese and Filipino immigrants were the victims of social separation. Indeed, it was not until 1952 that laws were laid down giving all Asian immigrants the right to citizenship.

小题1:. While making great achievements at college, Asian-American students ________.

A.feel they are mistreated because of limited knowledge of English

B.are afraid that their academic successes bear a strong Asian character

C.still worry about unfair treatment in academic areas

D.generally feel it a shame to have to depend on their parents小题2:. What are the major factors that determine the success of Asian Americans?

A.Solid foundation in basic mathematics and Asian culture.

B.Hard work and intelligence.

C.Hard work and a limited knowledge of English.

D.Asian culture and the American educational system.小题3:.Few Asian-American students major in human sciences mainly because_________.

A.their English is not good enough

B.they are afraid they might meet with unfair judgment in these areas

C.there is a wide difference between Asian and Western cultures

D.they know little about American culture and society小题4:. The author’s tone in this passage is __________.

A.sympathetic

B.doubtful

C.critical

D.objective