5.A computer can get very hot when it works on a lot of programs.It can cost a lot to cool the computer.So some scientists want to know what would happen if the heat from the computer could be used.
Large Internet companies such as Google and Microsoft have thousands of computers.As these computers deal with information,they produce lots of heat,so they need huge cooling systems.These systems send the heat into the air.
A company in Holland (荷兰) thinks paying to make the computers work and then paying again to cool them are a waste of energy.So the company developed a special device-the e-Radiator.
Boaz Leupe,head of the company,says that e-Radiator works as a heating system and saves money.He explains that the energy is used twice-once to heat the home and once to cool the computer and that the users don't have to pay to cool their computers.
Five homeowners in Holland are testing the heating system in their homes.
"We pay for the computer using,so,in that way,homeowners get heating for free."Boaz says.
Jan Visser is one of the homeowners."If you use the computer more,the e-Radiator producers more heat,"he says,"It cannot provide enough heat if you don't use your computer often."But he is ready to try it.It's a great help for his family.
The company says e-Radiators produce heat temperatures of up to 55℃.It says the system could save its users about $440a year.
41.Before the e-Radiator appears,usually the heat of a computerA.
A.is sent into the airB.helps the five homeowners
C.is used twiceD.makes the computer work better
42.The e-radiator is mainly usedB.
A.to help Microsoft
B.to provide heat
C.to heat the computer
D.to drive the computer
43.The Chinese meaning of the word"device"in this passage is probably"D".
A.节能
B.实验
C.开关
D.仪器
44.How much could the system save its users a month?C
A.About 20dollars.
B.About 440dollars.
C.About 36yuan.
D.About 36dollars.
45.The best title of the passage may be"C".
A.An Environment Problem
B.The Future Computers
C.A New Way to Heat Home
D.The Energy to Be Wasted.
分析 我们知道电脑在工作的时候,会产生很多热量,原来这些热量都是直接散发到空气中.但是后来荷兰的一个公司研制了一种新型散热器,它一方面可以给电脑散热,另一方面,它能把电脑散发的热量再次使用,给家庭供暖.
解答 41.A 细节理解题.根据短文前两段中These systems send the heat into the air.可知,由于电脑在工作的时候会发热,所以一些大型的计算机公司需要冷却系统,使计算机冷却下来,把热量发送到空气中.由此可知选A.
42.B细节理解题.根据短文第三段的内容Boaz Leupe,head of the company,says that e-Radiator works as a heating system and saves money可知,e-radiator是电子散热器,它是一个加热系统,一方面给家里提供热量.另一方面可以使计算机冷却.由此可知选B.
43.D词义猜测题.根据短文的大意和这个单词所在的句子可知,这是荷兰的一个公司研制出来的一种仪器,它可以帮助计算机散热,还能把热量用到家里.由此可知device的意思是仪器,故选D.
44.C细节理解题.根据It says the system could save its users about $440a year.可知该系统每年可以为用户节省大约440美元.即每月大约36美元,故答案为:C.
45.C主旨大意题.这篇短文给我们讲述的是一种新型的散热器,它一方面可以给电脑散热,另一方面,它能把电脑散发的热量再次使用,给家庭供暖.故选C,A New Way to Heat Homes供暖的新方法.
点评 做题时要在理解好文意的基础上,与题目有机的结合,从文章中找到相关细节性的句子与选项细细比对,进行选择或推理判断,找出符合文章内容的正确答案.做题注意灵活,有时可采用排除法或直选法确定出最终答案.