首页
登录
职称英语
The speaker thinks that [br] [originaltext] Ok, good afternoon, ladies and g
The speaker thinks that [br] [originaltext] Ok, good afternoon, ladies and g
游客
2024-12-22
28
管理
问题
The speaker thinks that [br]
Ok, good afternoon, ladies and gentlemen. In previous weeks we talked about different types of pollution and this week I want to focus on air pollution, with air pollution caused by the car. It’s well known that cars are the main cause of air pollution in cities, which comes up to 60% in some cities and in others even as high as 90% of all air pollution caused by the car. Cars contribute a great deal to the air pollution in our cities, and this will get worse as the number of cars increases in the cities.
Firstly, I’d like to talk about how cars cause air pollution. How does a car cause air pollution? Well, you are all familiar with the internal combustion engine. There’s a mixture of petrol which explodes and this explosion helps propel a car forwarD.Unfortunately, in this process there are some poisonous chemicals which remain, and these poisonous chemicals mainly come out of the back of the car through the exhaust.
Now, it’s not just what comes out of the car exhaust that is dangerous, the brakes also cause pollution. The brakes on cars give off asbestos, and as you know asbestos is... is a highly dangerous substance and can kill us.
And thirdly, the tires themselves give off small rubber particles which are not very good for health. We need to find solutions to this problem. I’m going to talk about 4 possible solutions.
Firstly, we should try and discourage the use of cars. We could do this by putting higher taxes on petrol or we could make cars more expensive. We could put the price of cars up.
Secondly, we might encourage alternative methods of transport. For example, recently in Shanghai, you’ve built a subway, which takes some of the pressure off the roads. Some people would use the subway rather than using cars. In addition, we could improve public transport, make it more comfortable, safer, and more regular so that the people will use public transport rather than cars. Next, we could also use cleaner fuels rather than petrol. For example, we might use natural gas in the future or we might experiment with battery group in cars.
And lastly, we could try mechanical means for reducing the amount of chemicals that are
emitted, which come out of cars, which come out of the exhaust pipe. We could fix things called catalytic converters to exhaust pipes. These are something... these are a device which are fixed over to the exhaust, which controls the carbon monoxide, which reduces the amount of dangerous chemicals that cars give off.
Now it’s unlikely that any one of these solutions will work on its own. I’m pretty sure that it would take a combination of all four of these solutions to solve the problem.
选项
A、to change the chemical structure of fuel.
B、to improve on the exhaust pipe.
C、to experiment with new engines.
D、to monitor the amount of chemicals.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3879748.html
相关试题推荐
Whydidtheprotestersmakesuchaprotest?[br][originaltext]Oppositionp
ForMrs.Saxby,theresumeisall-important,becauseit[br][originaltext]M:A
ForMrs.Saxby,theresumeisall-important,becauseit[originaltext]M:Asyou
TheUnitedNationsGeneralAssemblywillsetupanewagencyto[originaltext]
What’sthepurposeofthecarbombing?[originaltext]ATalibansuicidecarb
Whatisthenewsmainlyabout?[br][originaltext][7]Votingistakingplac
Theman’sfirstjobwasin[br][originaltext]W:Goodevening.Herewithusis
Theman’sfirstjobwasin[br][originaltext]W:Goodevening.Herewithusis
Theman’sfirstjobwasin[originaltext]W:Goodevening.HerewithusisHerny
Accordingtothenews,AmericantroopsinPanama______.[originaltext]TheUn
随机试题
Therehavebeenseveralclaimstohaveclonedhumansoverthepastfewyears
[A]astonishment[B]deeply[C]employed[D]scare[E]earnest[F]amuse[G]lying[H
Doyoufindgettingupinthemorningsodifficultthatit’spainful?Thism
可用于治疗心源性哮喘的药物是()A.吗啡 B.异丙肾上腺素 C.沙丁胺醇
位于市区的某房地产开发企业(增值税一般纳税人)于2019年1月转让一栋已使用过8
()在书法方面颇有造诣,是楷书的创始人,被后世尊为“楷书鼻祖”。A.颜真卿
基金定期报告中信息披露最详尽的文件是()。A.基金净值公告 B.年度报告
以下几项中可以据之判断疼痛虚实的是A.疼痛的部位 B.痛时姿势 C.痛处喜按
从组织角度讲,在员工职业生涯中期的组织管理中的一个重要的预防措施就是制定出明确的
下列关于周转材料的表述中.正确的有()。A.多次使用的包装物应当根据使用次数分次
最新回复
(
0
)