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
2023-08-23
42
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:https://tihaiku.com/zcyy/2951492.html
相关试题推荐
[originaltext]TUVALU,atinycountryinthePacificOcean,hasaskedforhe
[originaltext]E-booksarebringingaboutaprofoundrevolutioninthewayb
[originaltext]W:Honey,couldyoucomehereforasecond.Weneedtotalk.Myp
[originaltext]W:Honey,couldyoucomehereforasecond.Weneedtotalk.Myp
[originaltext]W:Honey,couldyoucomehereforasecond.Weneedtotalk.Myp
[originaltext]W:Iwasworkingonapaperaboutthedifferencesbetweenwomena
[originaltext]W:Iwasworkingonapaperaboutthedifferencesbetweenwomena
[originaltext]W:Wow,youmusthavehad5hamburgersalready.Andthefootball
[originaltext]W:Wow,youmusthavehad5hamburgersalready.Andthefootball
[originaltext]W:Wow,youmusthavehad5hamburgersalready.Andthefootball
随机试题
1990年,老布什与国会的争执迫使他改变在竞选时做出的“绝不增税”承诺。(capitulateon)In1990adust-upwithCongr
Listen!Who______inthenextroomnow?A、singsB、sangC、issingingD、wassinging
WhichofthefollowingisaskedtosupportBarackObama’sboostinghiringprogra
Howlongdoesaninterviewusuallylastaccordingtothespeaker?[br][origina
Computersareelectronicmachinesforprocessingdata.Dataarepiecesorit
各类股权投资基金募集完毕,基金管理人进行基金备案,通常应向基金业协会报送以下材料
A.克拉霉素B.红霉素C.阿米卡星D.林可霉素E.阿莫西林具抗铜绿假单胞菌的作用
某项目有甲、乙、丙、丁四个方案,计算得知各方案的生产负荷率分别为68%、87%、
1.工程背景资料如下: (1)图6-Ⅱ为某泵房工艺管道系统安装图。 (2
大型设备吊装工艺和吊点位置应满足强度、刚度和局部稳定性等相关要求,这属于吊装方案
最新回复
(
0
)