首页
登录
职称英语
[originaltext] For years scientists have been worried about the effects of a
[originaltext] For years scientists have been worried about the effects of a
游客
2024-04-23
58
管理
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.[21]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.
20. According to the speaker, what problem may indoor air pollution bring to people?
21. What causes the indoor air pollution according to the speaker?
22. What is the most effective way to clean the air?
选项
A、They may feel exhausted.
B、They may feel very nervous.
C、They may have heartache.
D、They may suffer a cold.
答案
A
解析
短文提到,室内空气污染可能使人感觉疲倦、眼痛、头疼等。A中的exhausted对应文中的tired.故答案为A。
转载请注明原文地址:http://tihaiku.com/zcyy/3567756.html
相关试题推荐
[originaltext]Beforeanewairlinergoesintoservice,everypartofitis
[originaltext]Foryearsscientistshavebeenworriedabouttheeffectsofa
[originaltext]Foryearsscientistshavebeenworriedabouttheeffectsofa
[originaltext]Foryearsscientistshavebeenworriedabouttheeffectsofa
[originaltext]MySpace,thesocialnetworkingwebsite,isdifferentfromoth
[originaltext]W:Hey,Sam!YoushouldtakealookatthisarticleaboutCanadia
[originaltext]W:Hey,Sam!YoushouldtakealookatthisarticleaboutCanadia
[originaltext]W:Hey,Sam!YoushouldtakealookatthisarticleaboutCanadia
[originaltext]M:MathDepartment,DoctorWebsterspeaking.W:Hello,Prof.Webs
[originaltext]W:HowwasyourdinneratthenewItalianrestauranttoday?M:We
随机试题
WhydidFrenchofficialmeetwithUnionandstudentleaders?[br][originaltext
ThemoleculesofcarbondioxideintheEarth’satmosphereaffecttheheatb
[originaltext]IncoldandsnowyAlaska,there’savillagecalledTakotna.I
女性,34岁,面部痤疮1年,逐渐加重,伴多毛,内分泌检查示睾酮增高,最适合选用的
共用题干 甲男于2008年7月经人介绍与乙女相识。相识不久,甲男向乙女提出想尽
Thechangeinthatvillagewasmiraculou
投资性房地产后续计量模式包括成本模式和公允价值模式两种模式,同一企业可以同时采用
(2018年真题)净现值可直接用于寿命期不同的互斥投资方案的决策。()
风机盘管机组进场后应进行见证抽样复试,不包括的复试参数是()。A.噪声 B.
股骨颈囊内骨折较为严重的后期并发症是A.髋关节屈曲畸形 B.下肢短缩畸形 C
最新回复
(
0
)