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单选题
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.Which of the following is true?
A
Enwave's system is said to work only in cities located near the Great Lakes.
B
The water deep in Lake Ontario always remains at the same temperature.
C
Experts warn that the use of CFCs in Enwave' s system will add to global warming.
D
Toronto is now searching for new natural sources of water to use in its water supply.
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更多 “单选题请阅读 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.Which of the following is true?A Enwave's system is said to work only in cities located near the Great Lakes.B The water deep in Lake Ontario always remains at the same temperature.C Experts warn that the use of CFCs in Enwave' s system will add to global warming.D Toronto is now searching for new natural sources of water to use in its water supply.” 相关考题
考题
单选题公开课是一种常用的教研形式,它对指导教学、推广教学经验、教师之间切磋才艺有着重要的作用。下列选项中最适合公开课的评价形式和方法是()。A
现场评课B
综合性评价C
进行示范观摩D
激励性评价
考题
单选题在学习高尔基的《海燕》时,当学生(甲)刚读到:“海燕像黑色的闪电,在高傲地飞翔”时,另一名同学乙低低地说了一句:“啊,海燕,你就长点心吧!”,顿时全班哄堂大笑。针对这种情况,以下处理最合理的一项是( )。A
停,学生甲,你(甲)坐下,你(乙)站起来给大家读读这篇课文吧,我看你是不是觉得自己读的很好啊!B
大家请保持安静,听我们学生甲继续朗读完好吗?C
呀,同学们真了不起,都由这篇外国的诗歌,想到了赵本山大叔的小品啦!不过不要着急,等这位同学读完,再对赵本山小品中那个“海燕”进行学习好不好,看看他和高尔基的海燕一样吗?D
大家想象力可真够丰富的,不过你们觉得这两个“海燕”是一样的吗?咱们要学习的是高尔基的“海燕”,要好好听讲知道不,这样不仅不利于你们听讲,也是对别人的不尊重,课堂上不要胡思乱想。
考题
单选题The core concept of the New Curriculum is _____.A
promoting the professional teachers’ developmentB
letting the students choose the course independentlyC
advocating the constructivist learningD
for every students’ development
考题
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大气的扩张使垃圾受到的万有引力增大而导致下落B
太空垃圾在与大气摩擦燃烧过程中质量不断减小,进而导致下落C
太空垃圾的上表面受到的大气压力大于其下表面受到的大气压力,这种压力差将它推向地面D
太空垃圾在大气阻力作用下速度减小,运动所需的向心力将小于万有引力,垃圾做趋向圆心的运动,落向地面
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单选题下列各组词语中,没有错别字的一组是( )。A
斡旋 互相 推诿 交插学科 望风披靡B
脉博 不可思议 不揣冒昧 进退维谷C
焦燥 草菅人命 哗众取宠 青春永驻D
怠慢 未雨绸缪 察言观色 沽名钓誉
考题
单选题阅读课题研究案例,按照要求答题。某校开展"构建大语文教学圈"的课题研究,组织了"名著阅读"的研究性学习活动。课题组老师带领学生走进图书馆和阅览室,借阅文学作品,静心阅读思考;与省、市图书馆建立合作关系,带领学生听取专家关于文学作品阅读的专题讲座;同时,组织学生开展"文学沙龙"活动,定期交流读书心得,分享学习经验。对上述案例的分析不正确的是()A
实现了多学科多领域的学习融合。B
促进了学生的学习、交流、合作。C
体现了语文研究性学习开放性的特点。D
体现了对语文教学资源的开发和利用。
考题
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美国民主制度的虚伪本质B
民主党比共和党更得人心C
科技发展影响了政治生活D
电视辩论决定了大选结果
考题
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课前五分钟的主题演讲,让学生讲述其在课外阅读中的感受B
开设课外阅读辅导讲座,对学生进行系统的阅读方法指导C
在自习课上,开展《三国演义》课本剧表演D
要求学生在阅读过程中写周记,记录心得感受
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基因与性状之间是一一对应的关系B
一般来说,生物体的性状受基因和环境的共同影响C
生物体的性状完全由基因控制D
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单选题The hummingbird's feathers sparkled and glittered in the sunlight,_______.A
its back is shiny green and its throat bright redB
its back shiny green and its throat is bright redC
its back is shiny green and its throat is bright redD
its back shiny green and its throat bright red
考题
问答题什么是美术?
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