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请阅读 Passage 1,完成第 21~25小题。Passage 1These days,many large city buildings are equipped with their own air-conditioning systems.These systems help keep the buildings cool,but they can also damage the environment.Since they use a lot of electricity,for instance,they contribute indirectly to global warming.In addition,the water that flows through the systems is often cooled using chemicals called chlorofluorocarbons,or CFCs,that are believed to damage the Earth's ozone layer.Recently,though,a system has been built in the city of Toronto,Canada,that cools buildings with little damage to the environment. In the traditional air-conditioning systems found in most large buildings,water is pumped through the building in a continuous cycle.The water is first cooled to a temperature of 4℃ in machines called chillers.It is then sent to individual units that cool the air in each room.As the water flows through the building,it gradually becomes warmer.Finally,it reaches the roof ,where it is left to cool down naturally in a water tower.After that it is returned to the chillers,where the cycle begins again.Toronto lies on the shore of Lake Ontario,one of North America's Great Lakes,and the new system makes use of cold water taken from about 80 meters below the surface of the lake.At this depth,the water in the lake remains at 4℃ all year round.This is exactly the temperature to which the water in air-conditioning systems is cooled.However,the water from the lake is not pumped directly into the air-conditioning systems.Instead,it is used to cool the water that is already inside the air-conditioning systems.After that,the lake water is added to the city's ordinary water supply.Enwave,the company that developed this deep-lake cooling system,says that it uses 75 percent less energy than traditional air conditioning.And since no CFCs are used,no damage can be caused to the ozone layer.Not every city is located next to a large lake,but experts believe that systems like the one being used in Toronto could be built elsewhere by using other natural sources of cold water.What is one advantage of Enwave 's new system?

发布日期:2022-05-18

请阅读 Passage 1,完成第 21~25小题。Passage 1These days,many...
A

It keeps buildings much cooler than other methods.

B

It can be used by large cities anywhere in the world.

C

It is much more energy-efficient than traditional systems.

D

It keeps water from being used for more than one purpose.

试题解析

小题

小题,汉语词语,读音xiǎo tí,意思是古书卷首的题目。

中文名
小题
出处
《钟山札记·大题小题》
拼音
xiǎo tí
注音
ㄒ一ㄠˇ ㄊ一ˊ

阅读

1.阅读是运用语言文字来获取信息、认识世界、发展思维,并获得审美体验与知识的活动。它是从视觉材料中获取信息的过程。视觉材料主要是文字和图片,也包括符号、公式、图表等。2.阅读是一种主动的过程,是由阅读者根据不同的目的加以调节控制的,陶冶人们的情操,提升自我修养。阅读是一种理解、领悟、吸收、鉴赏、评价和探究文章的思维过程。阅读可以改变思想、获取知识,从而可能改变命运。

中文名
阅读
发音
yuè dú
释义
运用
外文名
reading
词语类型
动词

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