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
20
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、Car tyres.
B、Car engines.
C、Car horns.
D、Car brakes.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3879746.html
相关试题推荐
[originaltext]An$18.5billionbidforUnocalmadeThursdaybyoneofthelar
[originaltext]An$18.5billionbidforUnocalmadeThursdaybyoneofthelar
[originaltext]A:Goodmorning,Mr.Pitt.Dositdown.B:Thankyou.A:Firstof
[originaltext]M:Youarenotstillwatchingtelevision,areyou?W:Ienjoyyou
[originaltext]M:Youarenotstillwatchingtelevision,areyou?W:Ienjoyyou
[originaltext]M:Youarenotstillwatchingtelevision,areyou?W:Ienjoyyou
[originaltext]TheoutgoingparliamentinthePalestinianterritorieshasvot
[originaltext]Bill:Hi,Howard.Whatareyouworkingnow?.Howard:Hi,Bill.Hi
[originaltext]Bill:Hi,Howard.Whatareyouworkingnow?.Howard:Hi,Bill.Hi
[originaltext]Bill:Hi,Howard.Whatareyouworkingnow?.Howard:Hi,Bill.Hi
随机试题
[originaltext]Theworld’ssmartestadolescenceinmathematicsandsciencea
Forthispart,youareallowed30minutestowriteashortessay.Youshouldsta
Wereyouthefirstorthelastchildinyourfamily?Orwereyouamiddleor
维生素B分子中含钴,经有机破坏后,生成钴盐,于1-亚硝酸-2-萘酚-3,6-二磺
康复医学不包含()A.康复治疗学 B.社区康复学 C.康复临床学 D
A.室间隔缺损 B.房间隔缺损 C.肺动脉瓣狭窄 D.动脉导管未闭 E.
血清铁降低,总铁结合力升高的是 A.慢性感染性贫血B.巨幼红细胞性贫血 C
患者,男,45岁。以"间断巩膜黄染伴腹胀2年,加重1周"之主诉入院。患者2年前无
2015年6月,国务院办公厅发布《关于支持新疆纺织服装产业发展促进就业的指导意见
30岁,男性,驾车撞树受伤,伤后右髋关节疼痛剧烈不能活动。查体:患肢短缩,呈屈曲
最新回复
(
0
)