北師大版高中英語(yǔ)必修2 unit 4《cyberspace》（section?。┲苎菥?文件)
【正文】 s， scientists began searching for a way to deal with discovered a natural pollution control system for building green do not really know how plants control air believe that a plant’s leaves ab sorb or take in the exchange the plant lets out oxygen through its leaves and tiny anizations on its suggest that all buildings should have one large plant or several small plants inside for every nine square meters of of different plants show that each absorbs different the most effective way to clean the air is to use different kinds of green plants inside your house can make it a prettier and more healthy place. 【解題導(dǎo)語(yǔ)】 本文是一篇科技說明文。細(xì)節(jié)理解題。 6． Some kind of indoor pollution can be found in________． A． every old house B． every modern house C． all kinds of houses D． all kinds of offices 解析：選 B。 7． The indoor air pollution is caused by________． A． the man173。細(xì)節(jié)理解 題。所以答案選 A。所以答案是 D。細(xì)節(jié)理解題。made building materials are now known to let out harmful 道 ， 造成室內(nèi)空氣污染的原因 ， 一個(gè)是 limited the flow of air， 一個(gè)是 man173。flow B． the building way that the builders want to save energy C． the building things that are made of man173。由文章第二段最后一句可知 ，科學(xué)家相信每一 橦 現(xiàn)代房屋都存在空氣污染。made building materials are now known to let out harmful 氣污染比室外空氣污染更 嚴(yán)重的原因就是人工材料產(chǎn)生的氣體。 5． Generally speaking， indoor air pollution may be more harmful than the air outside because________． A． indoor air pollution can often make people seriously ill B． there may be more harmful gases outside the buildings C． man173。本文作者客觀敘述了快閃族的一些基本情況 ， 沒有發(fā)表自己的觀點(diǎn) ， 因此是 “ 客觀的 ” 。推理判斷題。 2． What can you learn about the flash mob from the passage? A． Because of lacking enough time the flash mob usually breaks up quickly. B． It gives people the chance to e together to do something unusual. C． The flash mob can be used in many fields just for fun. D． Once the place for the activity is determined， it can’ t be changed. 解析：選 B。 課時(shí)作業(yè) 1 (B 卷 ) Ⅰ .閱讀理解 A A flash mob (快閃族 )， which is a group of people who e together suddenly in a public place， do something unusual for a short time， and then quickly break are usually anized with the help of the Inter or other digital munication a predetermined time， they gather and perform some distractions(消遣 )such as waving their hands and exchanging ， they quickly break up before the police can 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， anized the first flash mob in Manhattan in May 2021 and the first successful flash mob came together on June 3， 2021— after the first attempt was foiled at Macy’ s department claimed that the activity was designed to make fun of hipsters (趕時(shí)髦的人 ) and call attention to the cultural atmosphere. Flash mob gatherings can sometimes shock an activity might seem amusing and untrue， but it also might frighten people who are not aware of what is taking ， flash mobs can serve as good political and economic tools. The flash mob is now being more and more use it to do many example， in 2021， hundreds of his fans gathered singing and dancing Micha
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