14.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 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.
42.Before the e-Radiator appears,usually the heat of a computerA.
A.is sent into the air                              
B.helps the five homeowners
C.is used twice                                      
D.makes the computer work better
43.The e-radiator is mainly usedB.
A.to help Microsoft                               
B.to provide heat
C.to heat the computer                         
D.to drive the computer
44.How much could the system save its users a month?C
A.About 20 dollars.
B.About 440 dollars.
C.About 36 yuan.
D.About 36 dollars.
45.The best title of the passage may be"C".
A.An Environment Problem                 
B.The Future Computers
C.A New Way to Heat Homes      
D.The Energy to Be Wasted.

分析 我們知道電腦在工作的時(shí)候,會(huì)產(chǎn)生很多熱量,原來(lái)這些熱量都是直接散發(fā)到空氣中.但是后來(lái)荷蘭的一個(gè)公司研制了一種新型散熱器,它一方面可以給電腦散熱,另一方面,它能把電腦散發(fā)的熱量再次使用,給家庭供暖.

解答 42.A 細(xì)節(jié)理解題.根據(jù)短文前兩段中These systems send the heat into the air.可知,由于電腦在工作的時(shí)候會(huì)發(fā)熱,所以一些大型的計(jì)算機(jī)公司需要冷卻系統(tǒng),使計(jì)算機(jī)冷卻下來(lái),把熱量發(fā)送到空氣中.由此可知選A.
43.B細(xì)節(jié)理解題.根據(jù)短文第三段的內(nèi)容可知,e-radiator是電子散熱器,它是一個(gè)加熱系統(tǒng),一方面給家里提供熱量.另一方面可以使計(jì)算機(jī)冷卻.由此可知選B.
44.C細(xì)節(jié)理解題.根據(jù)It says the system could save its users about 440a year.可知一年節(jié)約440元,一個(gè)月就是大約36元,故選C.
45.C主旨大意題.這篇短文給我們講述的是一種新型的散熱器,它一方面可以給電腦散熱,另一方面,它能把電腦散發(fā)的熱量再次使用,給家庭供暖.因此B選項(xiàng)A New Way to Heat Homes供暖的新方法這個(gè)題目比較能概括短文大意,故選C.

點(diǎn)評(píng) 做題時(shí)首先要仔細(xì)閱讀短文,掌握大意,然后結(jié)合具體的題目,找出相關(guān)信息,就可以確定正確答案.

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