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
2023-08-20
30
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、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/2940670.html
相关试题推荐
[originaltext]Yuppiesareyoungpeoplewhoearnalotofmoneyandlivein
[originaltext]Yuppiesareyoungpeoplewhoearnalotofmoneyandlivein
[originaltext]FewpeoplecanstandforthespiritofearlierAmericaasmuc
[originaltext]M:Timetoeat!W:Coming.Oh,I’mstarving.Ohyuck!What’sthat?M
[originaltext]W:We’veallheardthesaying"Laughteristhebestmedicine."How
[originaltext]W:We’veallheardthesaying"Laughteristhebestmedicine."How
[originaltext]W:You’renotgoingtomakethecall,areyou?Aren’tyougoingto
[originaltext]W:You’renotgoingtomakethecall,areyou?Aren’tyougoingto
[originaltext]W:You’renotgoingtomakethecall,areyou?Aren’tyougoingto
[originaltext]W:You’renotgoingtomakethecall,areyou?Aren’tyougoingto
随机试题
Inthe1950s,thepioneersofartificialintelligence(AI)predictedthat,
Such______thecase,therearenogroundstojustifyyourcomplaints.A、isB、wasC
"Iwanttocriticizethesocialsystem,andtoshowitatwork,atitsmost
《红楼梦》(ADreamofRedMansions)写成于18世纪,是中国著名的古典长篇小说。小说共计120回,前80回的作者是曹雪芹,后40回
下列对于舌形塔板的特点,表述正确的有()。A:开孔率较大 B:生产能力比泡罩
髂棘间径、髂嵴间径、骶耻外径、坐骨结节间径、耻骨弓角度 A.26cm 26cm
下列测量工作中,不属于规划监督测量的是()。A、放线测量 B、验线测量
计算期货公司风险监管指标时,期货公司持有的金融资产按照分类和流动性情况采取不同比
计划经济时期的中国乡村治理经历了( )阶段。A.人民公社制 B.乡政村治
货流图的主要功能包括()。 A.表明物流的合理流向,避免不合理运输 B.检查
最新回复
(
0
)