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
2024-04-11
28
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、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://tihaiku.com/zcyy/3550086.html
相关试题推荐
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
Scientistshavebegunusingsatellite-basedsystemstopredictvolcanicerup
[originaltext]Everyyear,peopleinAmericauseenergyequaltoover30mil
[originaltext]Everyyear,peopleinAmericauseenergyequaltoover30mil
[originaltext]Ifsheernumbersprovideanyproof,America’suniversitiesar
[originaltext]Youprobablyknowwhatamobileis,butthemobileI’mtalkin
[originaltext]Youprobablyknowwhatamobileis,butthemobileI’mtalkin
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
[originaltext]W:Iwonderifyoucouldtellmealittlebitaboutyourjobasa
随机试题
PrimaryFunctionsoftheFamilyThefamilyisabasicu
______fromspace,theearth,withwater______seventypercentofitssurface,
Itis______stealingtotakeathingawaywithoutpermissionofitsowner.A、nothi
以下的选项中哪些是傅里叶变换的性质?()A.非线性 B.时移 C.频移 D
综合考虑安全和经济两个方面,隧道白天照明被划分为()五个区段。A.入口段
关于建立合格投资者制度的必要性,以下描述不正确的是()A.基金投资者通常处于信
分娩第一期护理哪项是错误的A.鼓励产妇少量多次进食 B.指导产妇每隔2~4h自
2020年,我国粮食种植面积11677万公顷,比上年增加70万公顷。其中,稻谷种
当机动车与非机动车分隔行驶时,双向()是最经济合理的。A.2~4条非机动车道
假定横墙增设构造柱GZ(240mm240mm),其局部平面如图11所示。GZ采用
最新回复
(
0
)