题目内容

15．To extinguish （熄灭） different kinds of fires，several types of fire extinguishers have been invented．They must be ready for immediate use when fire breaks out．Most portable （手提式的） kinds operate for less than a minute，so they are useful only on small fires．The law requires ships，trains，buses and planes to carry extinguishers．
Since fuel，oxygen and heat must be present in order for fire to exist，one or more of these things must be removed or reduced to extinguish a fire．If the heat is reduced by cooling the material below a certain temperature，the fire goes out．The cooling method is the most common way to put out a fire．Water is the best cooling material because it is low in cost and easy to get．
Another method of extinguishing fire is by cutting off the oxygen．This is usually done by covering the fire with sand，steam or some other things．A blanket may be used to cover a small fire．
A third method is called separation，which includes removing the fuel，or material easy to burn，from a fire，so that it can find no fuel．
The method that is used to put out a fire depends upon the type of fire．Fires have been grouped in three classes．Fires in wood，paper，cloth and the like are called Class A fires．These materials usually help keep the fire on．Such fires can be stopped most readily by cooling with water．

8．If a fire breaks out on a bus，which of the follow should be ready there for you to use？D
A．Sand   
B．Water     
C．A blanket．
D．An extinguisher．
9．To cover a small piece of burning wood with a basin（盆） in order to stop the fire is an example ofA
A．cutting off the oxygen           
B．reducing the heat
C．removing the fuel               
D．separating the fire
10．In choosing how to put out a fire，we should first be clear aboutB．
A．when it breaks out              
B．what kind it is
C．how it comes about             
D．where it takes place
11．What would the author probably discuss in the paragraph that follows？B
A．Another type of extinguishers         
B．Another class of fires
C．How fires break out．
D．How fires can be prevented．

分析 文章分析了不同的灭火器原理和方法．

解答 DABB
8．D  推理题．根据第一段最后一句"The law requires ships，trains buses and planes to carry extinguishers"说明在公共汽车上有灭火器，公共汽车上着火应该用灭火器．故选D．
9．A   细节推断题．根据第三段"Another method of extinguishing fire is by cutting the oxygen．This is usually done by covering the fire with sand，steam or some other things"用脸盆盖上烧着的木头显然是截断氧气的方法．故选A．
10．B   细节推断题．根据"The method that is used to put out a fire depends upon the type of fire．"可知要想判断用什么方法，首先要弄清着火的类型，所以选B．
11．B   推理题．最后一段描述了"Fires have been grouped in three classes．"然后讲述了第一种，所以后面很可能描述另外两种．所以选B．

点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．

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3．---What can I do for you，Mum？
---The salt has ______．You'd better go to the shop to buy some．（　　）
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28．We can infer from Paragraph 2thatD．
A．shoes are vital to their wearers
B．a practical purpose is to wear shoes
C．people want to buy new shoes they pay attention to
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29．Which of the following is NOT true according to the text？D
A．People with high incomes probably wear expensive shoes．
B．Ankle boots are closely aligned with"aggressive"personalities．
C．People wearing"uncomfortable looking"shoes tend to be calm
D．People who wear practical and functional shoes may be hard to deal with
30．The underlined word"attachment anxiety"，probably meansC．
A．Attached happiness to one's personality．
B．Feeling always worried about everything．
C．Often feeling worried about his or her appearance．
D．Wasting an inordinate amount of time．
31．Which might be the best title for the passage？D
A．Bad Shoes，Bad Personality．
B．People Are What They Wear．
C．How To Choose Suitable Shoes        
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Shortly before Christmas one year，a local flower shop offered a bouquetamonth special．It seemed to be a great way to thank her for all of the flowers she had given me through the years．
After the holidays，in early January，I drove her to the flower shop to pick up her first month's bouquet．The small fresh colorful bouquet would hardly fill a small vase．
I was so embarrassed．However，after we returned home，she began to arrange the flowers she had received．"Mom，I'm sorry，"I told her．"I can't believe how skimpy that bouquet is．"She looked at me and smiled．"It's okay，"she said．"It allows me to better enjoy the beauty of each one．"
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Thanks，mom，for helping me understand that less is sometimes more．
21．According to Paragraph 1，which of the following is TRUE？A
A．The author's mother put fresh flowers on the author's coffee table．
B．The author used to buy some fresh flowers on her way home．
C．The author's mother usually bought flowers for her daughter．
D．The author and her mother shared a beautiful garden．
22．The author bought her mother flowers toB．
A．celebrate the coming Christmas
B．express thanks for all her mother's done
C．bring more flowers to her mother's garden
D．arrange her mother's new house
23．The underlined word"skimpy"in Paragraph 4meansD．
A．beautiful        
B．colorful        
C．cheap        
D．small
24．What did the author learn from her mother？D
A．How to grow flowers．
B．How to arrange flowers．
C．Enjoying life if possible．
D．Considering things in other ways．
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Scientists also believe that a short-term memory can become a long-term memory if a lot of chemical and physical changes take place in the part of the brain．Although the human brain weighs three pounds，it contains 30billion nerve cells acting like a computer．When those changes strengthen the links in certain nerve cells，a thought becomes a part of the long-term memory．
21．To live safely，people in the past should be able to rememberB．
A．the learning ability          
B．the dangers around them
C．some wild plants              
D．their friends'addresses
22．How many types of memory are mentioned in the passage？B
A.1．
B.2．
C.3．
D.4．
23．A short-term memory can become a long-tam memory whenD
A．certain nerve cells get destroyed in daily life
B．the facts stay in the brain for quite a few hours
C．people become strong through different exercise
D．some nerve cells link strongly by certain changes
24．What's the best title for this passage？C
A．Living skills             
B．Chemical changes
C．Memory types          
D．Physical changes．
5．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．
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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．

32．The e-radiator is mainly usedA．
A．to provide heat  
B．to drive the computer
C．to heat the computer  
D．to help Microsoft
33．Before the e-Radiator appears，usually the heat of a computerD．
A．makes the computer work better     
B．helps the five homeowners
C．is used twice                    
D．is sent into the air
34．The Chinese meaning of the word"device"in this passage is probably"B"．
A．节能  
B．仪器 
C．实验 
D．开关
35．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．

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