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
2023-08-17
55
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. 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、To let out clean gas.
B、To take in harmful gas.
C、To use various plants.
D、To let the air flow freely.
答案
C
解析
短文末句明确提到,使空气清新的最有效方法就是使用各种植物,因此C正确。
转载请注明原文地址:https://tihaiku.com/zcyy/2933827.html
相关试题推荐
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
[originaltext]Everyyear,peopleinAmericauseenergyequaltoover30mil
[originaltext]Everyyear,peopleinAmericauseenergyequaltoover30mil
[originaltext]Everyyear,peopleinAmericauseenergyequaltoover30mil
[originaltext]Ifsheernumbersprovideanyproof,America’suniversitiesar
[originaltext]Ifsheernumbersprovideanyproof,America’suniversitiesar
[originaltext]Youprobablyknowwhatamobileis,butthemobileI’mtalkin
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
随机试题
Opinionpollsarenowbeginningtoshowareluctantconsensusthat,whoever
Biologically,thereisonlyonequalitywhichdistinguishesusfromanimals:
______byalargeaudience,hefeltverynervousanddidn’tknowwhattosay.A、Wa
WhyistheIran’sSupremeLeaderurginghiscountrymentoworkharder?[br][or
Apaper,Anatomy(剖析)ofaLarge,ScaleSocialSearchEngine,layingoutastr
对于桥涵工程悬索桥先导索施工,说法错误的是()。A.先导索施工前应对施工方案进
拔除松动的乳牙临床常用:( )A.阻滞麻醉 B.表面麻醉 C.冷冻麻醉
资料(一) 凯德证券股份有限公司(以下简称凯德证券)成立于上世纪90年代
著名的大提琴曲《天鹅》是圣桑的作品()中的一首。A.《死之舞》 B.《动物
根据《慈善法》,“中华慈善日”为每年的()。A.3月3日 B.3月5日 C
最新回复
(
0
)