相关试题
Which of the following words doesn′t have three syllables?
A.favouriteB.countrysideC.illegibleD.consciousness
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 happens in the end to the water from Lake Ontario?查看材料
A.It is used by the residents of Toronto.B.It is returned to a place deep in the lake.C.It is cooled down before being used again.D.It is added to the water inside air-conditioning systems.
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?查看材料
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.
根据题目要求完成下列任务。用中文作答。下面是某教师在写作课中的教学实录。(1)教师布置任务。T：Now you are going to write a short passage about your new teacher．And you have learned a text about new teachers，right?Have you found a lot of useful words from the text?Now I’ll give you a few minutes to find words that you will use to describe your new teacher．Then I will ask one of you to come to write down the words on the blackboard．(2)学生A到前面白板上写，其他同学在下面写。过程中教师能与个别学生交流。(3)学生A写完后，教师引导学生看学生A写的单词。T：Maybe you have found your words．Now let’s see A’s words．There can also be?phrases，or even sentences．然后教师开始与学生A交流其所写内容，如第一个是first impression，问学生是否要用到first impression(Do you use this to describe your new teacher?)(4)邀请更多的学生说出自己找出的单词，并与学生就其所给单词进行交流，问学生如何使用所选单词。(5)最后教师总结。根据上面的信息，从下面三个方面作答：(1)教师在布置任务阶段采用了什么方式让学生获取可用的词汇?(8分)(2)评析该教师在布置任务阶段的组织者作用。(10分)(3)本案例中教师的反馈有哪些需要注意的地方?(12分)
You__________be too cautious when you are driving especially on the freeway.
A.can'tB.needn'tC.mustn'tD.won't
