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
2024-04-07
16
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. [13]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. [14]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. [15]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/3544332.html
相关试题推荐
[originaltext]Whenmyfirstchildren’sbookwaspublished,Ireturnedtomy
[originaltext][20]Itiswellthatyoungmenshouldbeginatthebeginninga
[originaltext]HowlonghaveyouhadyourAppleiPhoneorcomputer?Ifyouh
[originaltext]HowlonghaveyouhadyourAppleiPhoneorcomputer?Ifyouh
[originaltext]Foryearsscientistshavebeenworriedabouttheeffectsofa
[originaltext]Foryearsscientistshavebeenworriedabouttheeffectsofa
[originaltext][9]MySpace,thesocialnetworkingwebsite,isdifferentfrom
[originaltext][9]MySpace,thesocialnetworkingwebsite,isdifferentfrom
[originaltext]W:Honey,couldyoucomehereforasecond.Weneedtotalk.Myp
[originaltext]W:Honey,couldyoucomehereforasecond.Weneedtotalk.Myp
随机试题
ExerciseIsGoodforYourBodyandYour
TheUnitedStatesiswellknownforitsnetworkofmajorhighwaysdesignedt
对施工生产要素施工环境的控制主要是采取( )的控制方法。A、动态控制 B、预
CK作为心脏标志物的叙述中不正确的是A.快速、经济、有效,是当今应用最广泛的心肌
下列关于刑事责任能力的说法正确的是()。A.精神病人在不能辨认或者不能控制自己行
(2018年真题)甲公司为从事商品流通的增值税一般纳税人,适用的增值税税率为1
如题图所示电路中,n为( )时,R=4Ω电阻可以获得最大功率。 A.2
根据《环境影响评价技术导则—声环境》,关于制定噪声防治措施一般要求的说法,正确的
下列关于互斥型投资方案经济效果的动态评价方法的讨论中,正确的是()。A.
某工程有甲、乙、丙、丁四个实施方案可供选择。四个方案的投资额依次是60万元、80
最新回复
(
0
)