8.If you see a group of people dancing and singing on the street or in the railway station,you don't need to feel surprised.They are a flash mob (快閃族),which is a group of people who come together suddenly in a public place,do something unusual for a brief period of time,and then quickly break up.They are usually organized with the help of the Internet or other digital communication network.At a predetermined time,they gather and perform some  distractions(消遣) such as waving their hands and exchanging books,Then,they quickly break up before the police can arrive.Using mobile phones,the flash mob can change its location if the first one has been replaced for any reason.
Bill Lasik,senior editor of Harper's Magazine,organized the first flash mob in Manhattan in May 2003and the first successful flash mob came together on June 3,2003-after the first attempt was foiled at Macy's department store.Lasik claimed that the activity was designed to make fun of hipsters (起時髦的人),and call attention to the cultural atmosphere.
Flash mob gatherings can sometimes shock people.Such an activity might seem amusing and untrue,but it also might frighten people who are not aware of what is taking place.Undoubtedly,flash mobs can serve as good political tools in any direction.They also have great economic potential,such as using flash mobs to advertise a product.
The flash mob is now becoming more and more popular.People use it to do many things.For example,in 2009,Michael Jackson's fans took part in a flash mob to remember him.Hundreds of his fans gathered singing and dancing Michael's famous song"Beat It"together.Flash mobs give people from all walks of life an opportunity to come together to create a memory.

29.The writer indicates that the flash mobA
A.may perform some positive functions
B.is always a headache for the police
C.is now a social experiment to criticize fashion followers
D.helps to improve the efficiency of communication
30.A flash mop is most likelyB
A.give out leaflets of a brand bicycle to the passers-by
B.gather in public places performing and leave quickly
C.plan to go mountaineering on the first day of Horse year
D.sit for days in front of the city hall for higher salary
31.According to the passage,what contribute(s) to the popularity of the flash mob?D
A.Harper's magazine     
B.The government
C.Political events
D.Digital networks.

分析 如果你在街上或者火車站看到一群人唱歌跳舞,你不必驚訝,這是快閃族在活動.快閃族是一群在公共場所突然聚集在一起的人群,做一些不同尋常的事情,然后快速解散.在本文中作者對快閃族進(jìn)行了一些介紹.

解答 29.A  推理判斷題,根據(jù)最后一段Flash mobs give people from all walks of life an opportunity to come together to create a memory.可知作者認(rèn)為快閃暴徒可以使各行各業(yè)的人有一個機(jī)會走到一起,因此有個積極的功能,故選A.
30.B  細(xì)節(jié)理解題,根據(jù)第一段They are a flash mob (快閃族),which is a group of people who come together suddenly in a public place,do something unusual for a brief period of time,and then quickly break up.可知快閃族是聚集在公共場所表演并迅速離開,故選B.
31.D  推理判斷題,根據(jù)第一段Using mobile phones,the flash mob can change its location if the first one has been replaced for any reason.可知快閃族對數(shù)字網(wǎng)絡(luò)有貢獻(xiàn),故選D.

點評 考查學(xué)生的細(xì)節(jié)理解和推理判斷能力.做細(xì)節(jié)理解題時一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確選擇.在做推理判斷題時不要以個人的主觀想象代替文章的事實,要根據(jù)文章事實進(jìn)行合乎邏輯的推理判斷.

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