首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、The building method the builders use to save energy. B、The limit of the flow of air between inside and outside. C、The use of m
A、The building method the builders use to save energy. B、The limit of the flow of air between inside and outside. C、The use of m
admin
2016-12-18
45
问题
For years scientists have been worried about the effects of air pollution on the earth’s natural conditions. Some believe the air inside many houses may be more dangerous than the air outside. It may be one hundred times worse. Indoor air pollution can cause a person to feel tired, to suffer eye-pain, headache and other problems. Some pollutants can cause breathing disorders, diseases of blood and even cancer. Most scientists agree that every modern house has some kind of indoor pollution. People began to notice the problem in the early 1970s. When builders began making houses and offices, they did not waste energy. To do this they built buildings that limited the flow of air between inside and outside. They also began using man-made building materials. These materials are now known to let out harmful gases. As the problem became more serious, scientists began searching for a way to deal with it. They discovered a natural pollution control system for buildings—green plants. Scientists do not really know how plants control air pollution. They believe that a plant’s leaves absorb or take in the pollutants. In exchange the plant lets out oxygen through its leaves and through its tiny organizations on its roots. Scientists suggest that all buildings should have one large plant or several small plants inside for every nine square meters of space. Studies of different plants show that each absorbs different chemicals. So the most effective way to clean the air is to use different kinds of plants.
13 According to the speaker, what problem may indoor air pollution bring to people?
14 What causes the indoor air pollution according to the speaker?
15 What is the most effective way to clean the air?
选项
A、The building method the builders use to save energy.
B、The limit of the flow of air between inside and outside.
C、The use of man-made building materials.
D、The limit of air-flow and the man-made materials.
答案
D
解析
短文提到,建筑者们为了不浪费能源,他们建造能限制室内与室外之间的空气流动的建筑物,他们还开始使用人造建筑材料。据目前所知,这些材料会释放出有害气体。正是这两个方面导致了室内空气污染,因此本题选D。
转载请注明原文地址:https://kaotiyun.com/show/YJF7777K
0
大学英语六级
相关试题推荐
Overacenturyago,AlfredRussellWallacewrotethat"weliveinazoologicallyimpoverishedworld,fromwhichallthehugest,
从公元前4000年开始,中国传统绘画已经持续发展了6000多年。它的发展不可避免地反映出时代和社会状况的变化。在它的早期发展阶段,中国绘画与其他工艺密切相关,从陶瓷(potteries)到青铜器(bronzes)和玉雕(carvedjades)的装饰。中
IntheBritishMuseumonaSundayafternoon,ancientfaceslookbackatchildrenandadultsalike.Insidetheirglasscases,pha
A、Readingthroughthenewsstoriesinagivenperiodoftime.B、Havinglittletimetoreadthenewsbeforegoingontheair.C、H
A、Ultimateachievementinthecompany.B、Opportunitiesoffurthertraining.C、Requirementsofsalaryandbenefits.D、Insightof
A、Helpinghernephewwiththewedding.B、Attendingatrainingcourseattheheadquarters.C、Takingherannualleavetotravelar
Untilrecently,themedicalcommunitybelievedthatmosthearinglosswascausedbyhearcellsintheeardegradingasweage.B
A、Visitthestories’settingplaces.B、Lookforallthedetailsaboutthestories.C、Haveafurthertalkwithpersonsinvolved.
WilmaSubrahadnointentionofbecomingapublicspeaker.After【B1】______fromcollegewithdegreesinchemistryandmicrobiolog
随机试题
Thereisapopularbeliefamongparentsthatschoolsarenolongerinterestedinspelling.NoschoolIhavetaughtinhaseveri
A、自溶酶B、M蛋白C、脂溶性色素D、透明质酸酶E、血浆凝固酶利于细菌扩散
溃疡性结肠炎重度活动期最严重的并发症是()。
会计监督的依据是()。
下列业务中,属于资金退出的有()。
水路货物运输中提供服务的有()。
某男,30岁。从小循规蹈矩,对自己要求严格,追求完美。近两年来出现怕脏,而每天反复洗手多次,并反复检查门窗是否关好,明知没有必要却控制不住。有时走到高楼上就有一种想跳下去的强烈冲动,担心控制不住而焦虑万分,为此回避登高。经常失眠,影响了正常的工作生活。
中国特色社会主义的开创和发展,始终贯穿着求同存异、共同发展的思想路线,这已成为推动理论创新、指导实践创新的根本方法。()
使用VC6打开考生文件夹下的源程序文件modi3.cpp。其中定义的类并不完整,按要求完成下列操作,将类的定义补充完整。完成以下功能:(1)完成CMyClass的构造函数,请改正注释//********1********后的错误。(2)
(1)Itismid-September,theheatisjustleakingoutoftheendofsummer,andJapanisenjoyingararepublicholiday.Aholida
最新回复
(
0
)