Question

3．When a computer works on a group of programs，it can get very hot．Cooling the computer can cost a lot．So some scientists wonder what would happen if the heat from the computer could be used．
  Large Internet companies （公司） 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 （系统）．These systems send the heat into the air．
   A company in Holland （荷兰） thinks paying to make the computers work and then p aying 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 c ool 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 t ry 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 440dollars a 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 usedD．
A．to drive the computer 
B．to help Microsoft
C．to heat the computer 
D．to provide heat
44．The Chinese meaning of the word"device"in this passage is probably"C"．
A．节能  
B．实验 
C．仪器 
D．开关
45．The best title of the passage may be"B"．
A．An Environment Problem 
B．A New Way to Heat Homes
C．The Future Computers 
D．The Energy to Be Wasted．

Answer 1

分析 本文主要讲述了科学家研究者们通过研制一种设备仪器，一方面可以给电脑散热，另一方面利用电脑运转过程中所散发出来的热量来提供热能，给家庭供暖，从而达到循环利用能源，节省能源的目的．

解答 42．A．细节理解题．根据第二段These systems send the heat into the air，可知原来这些热量是直接散发到空气中，故选A．
43．D．细节理解题．根据第四段中的e-Radiator works as a heating system，可知是一个电子散热器也是一个加热系统，故应选D．
44．C．词义猜测题．分析device一词所在的语境，可知在此词后有一个破折号the e-Radiator，而其后 e-Radiator works as a heating system and saves money再介绍了这种新的发明，因此可推它的意思是：设备或仪器．故选C．
45．B．标题判断题．纵观全文 e-Radiator works as a heating system and saves money，The company says e-Radiators produce heat temperatures of up to 55℃．It says the system could save its users about 440dollars a year．，可知本文主要讲述了科学家研究者们通过研制一种设备仪器，利用电脑运转过程中所散发出来的热量来提供热能，给家庭供暖，从而达到循环利用能源，节省能源的目的，故选B．

点评 先读题，然后带着问题去读文章，掌握主旨大意，找出与问题有关的句子，最后进行研读确定答案，平时注意积累词汇．