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.
1.A bite of China
A bite of China has attracted millions of people all over China and even moved many of them to tears.It is a series of television documentaries which show delicious Chinese food.
"We made the documentaries with our respect and the love for food."said the director Chen Xiaoqing.The documentaries provide a special view of Chinese food as well as the relations between people and food,and between people and society from the food.
The history of Chinese food is thousands of years and is changing all the time.Chinese food is famous for its taste,many different kinds of ingredients and eating styles.
So Chinese people are proud of eating different styles of foods and they have formed Chinese food  culture.

31.A bite of China is a series ofC
A.comedies 
B.action movies 
C.documentaries  
D.thrillers
32.This a series of documentaries is aboutA
A.Chinese food     
B.Chinese movies  
C.Chinese people   
D.Chinese society
33.Chinese food is famous forD
A.its taste   
B.many different kinds of ingredients 
C.eating styles  
D.A,B and C
34.What are Chinese people proud ofB
A.different styles of fruit     
B.different styles of food
C.different styles of vegetables   
D.different styles of meat
35.What can you feel from the passage?A
A.China is a great country with a long history of food culture
B.Chinese food is the only one we like
C.we can eat all the food in the documentaries
D.The history of Chinese food is hundreds of years.
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