课时作业(八) Unit 3 Computers
Section Ⅲ Learning about Language & Using Language
(本栏目内容，在学生用书中以独立形式分册装订！)
Ⅰ.单项填空
1．Professor Smith is so busy with the research________ he has no time left for any other activity.
答案： that
2．________more and more forests destroyed，many animals are facing the danger of dying out.
答案： With
3．I like reading，________the help of which I can be provided with joy and ability.
答案： with
4．Never judge a man by his________(appear) alone—you might be fooled by what he looks like.
答案： appearance
5．We can always succeed in finding some more time，no matter________tight our schedule is in daily life.
答案： how
6．More problems like air pollution at the nuclear power plant are certain________(arise)．
答案： to arise
7．It is not very effective to watch ________ our children by keeping an eye on what they are doing on the computer.
答案： over
8．His dream of going to Peking University has come into________(real)．
答案： reality
9．I wish to work in my own________(person) company in the future.
答案： personal
10．If the opportunity________(arise)，I’d love to go abroad for further study.
答案： arises
11．My father will buy me a(n) ________(electric) dictionary if I get good results in the final exam.
答案： electronic
12．She ________(signal) to the cars behind that they were going the wrong way.
答案： signaled
13．________the 1970s，computers have been used ________offices and homes.
答案： Since；in
14．My father was ________the city basketball team.
答案： on
15．From________on，I became more and more interested ________computer.
答案： then；in
Ⅱ.完成句子
1．________________(在帮助下)his teacher，he made greater progress in his English.
答案： With the help of
2．The new teacher is fresh from university.He really doesn’t know how to______________(对付) the badly behaved students.
答案： deal with
3．Well，the story is too difficult for Mary.She can’t understand.______________(毕竟)，she’s only two years old.
答案： After all
4．__________________(从某种程度上)，his biology has improved，but there is still a long way to go.
答案： In a way
5．They told me it would be cheap，but__________________(实际上) it cost me nearly $500.
答案： in fact
6．He was________angry________(如此……以至于……) he left the room without saying a word.
答案： so；that
7．The driver who hurt himself in the accident ________________(被看护) in hospital all the time by the doctor yesterday.
答案： was being watched over
8．His wife died in 1992 and __________________(从那时起) he has lived alone.
答案： from then on
9．He didn’t work hard；________________(结果)，he failed in the exam.
答案： as a result
10．You cannot expect her to do the housework________________(又) look after the children.
答案： as well as
Ⅲ.阅读理解
The Internet brings us many advantages.
With the Internet，people can send and receive emails.On the Internet，people can skim over news.Using the Telnet，the user anywhere on the Internet can log into any other machine on which he has an account.It is possible to use the FTP program to copy files from one machine on the Internet to another.
But the Internet also brings us troubles.
Internet use seems to cause a fall in psychological (心理的) health，according to research at Carnegie Mellon University.Even people who spent just a few hours a week on the Internet experienced more depression and loneliness than those who logged on less often，the twoyear study showed.And it wasn’t that people who were already feeling bad spent more time on the Internet，but that using the Net actually seemed to cause the bad feelings.
Researchers are puzzled over the results，which were completely opposite to what they had expected.They expected that the Net would prove socially healthier than television，since the Net allows users to choose their information and to communicate with others.
The fact that Internet use reduces time used for family and friends may be the reason for the drop in health，researchers said.Faceless，bodiless “virtual” (虚拟的) communication may be less psychologically satisfying than actual conversations，and the relationships formed through it may not be so deep.Another possibility is that exposure to the wider world through the Net makes users less satisfied with their lives.
“But_it’s_important_to_remember_this_is_not_about_the_technology；it’s_about_how_it_is_used，” said one of the researchers.“It really points to the need for considering social factors (因素) when you design new inventions.”
1．The writer mainly wants to tell us that________.
A．the Internet can bring people many advantages
B．the Internet use may cause psychological problems
C．the Internet users are not satisfied with their lives
D．we shouldn’t use the Internet
解析： 文章虽然谈论了网络的优点，但从其篇幅和重点来看，文章侧重于谈论由于使用网络而产生的一些问题，主题句在第四段。作者其实是想提醒我们使用网络可能有损心理健康。
答案： B
2．Why are the researchers puzzling over the results?
A．Because the results were completely different from what they had thought.
B．Because the Net proved socially healthier than television.
C．Because the Internet users were all healthier.
D．Because the Internet users experienced less depression and loneliness.
解析： Researchers are puzzled over the results，which were completely opposite to what they had expected.从这句可知令研究人员疑惑的是研究结果与他们期盼的完全相反。
答案： A
3．What may be the reasons why the Internet use causes a fall in psychological health?
A．Internet use reduces time used for family and friends.
B．Virtual communication is less psychologically satisfying than actual conversations.
C．Exposure to the wider world through the Net makes users less satisfied with their lives.
D．All the above.
解析： The fact that...Faceless，bodiless “virtual” communication may be less psychologically satisfying than actual conversations，and the relationships formed through it may not be so deep.Another possibility is that exposure to the wider world through the Net makes users less satisfied with their lives.从这几句可知A、B、C都为原因。
答案： D
4．What does the underlined part in the last paragraph mean?
A．What matters is not the technology but how it is used.
B．This passage is not about the technology but about how it is used.
C．We should remember to learn about the technology.
D．We should remember to learn how to use computers.
解析： 作者通过画线部分想表明这一切与技术本身无关，而是看我们怎么利用。
答案： A
Laptops and notebooks can be as fast and useful as your desktop PC.In fact，I’m typing this on my own 13.3 Asus laptop at home.It has everything I might need—a screen，a wireless mouse and a wireless keyboard.
When I bought mine，I went for a 13.3 inch laptop because I felt that at that size typing was still comfortable.I was right：it is.And it’s light enough to not bother my back too much.When you’re buying your laptop，remember lighter is better.
If you are going to buy a laptop，you don’t want to think about the weight only.You also need to think about battery life.Personally I’m very happy to have bought one that came with 12 hours of battery life.Of course it’s less in practice，especially when I am online or when it is attached to a screen.Those two aspects are probably the most important when you’re buying your laptop.
However，there are a few other things to consider.The newest and best laptops come with a dual core (双核) or even a quad core.They’re able to deal with two or even four tasks at the same time.That’s the way processors (处理器) are made faster today：not by speed (in Hz)，but by how much they can do at the same time.
Internal memory (内存) is also an issue.Right now 4 GB is good enough for most uses (not if you’re playing games of course)．More will hardly be used by your laptop anyhow，as the software isn’t equipped to deal with it yet.
If you can afford it，a Mac should be considered.Lightweight Apple Laptops are the Macbook Air laptops.They don’t just look great；they’re also lighter than most other small laptops out there.Their 11inch laptops and 13inch laptops both weigh less than 3 pounds.
语篇解读 我们在买笔记本电脑时应该考虑哪些因素来帮助我们选择一台合适的笔记本电脑呢？
5．According to the writer，we know that laptops and notebooks________.
A．are not as useful as desktop PCs
B．are not as fast as desktop PCs
C．are comfortable to type on
D．are not light enough for her
解析： 细节理解题。根据第二段的When I bought mine，I went for a 13.3 inch laptop because I felt that at that size typing was still comfortable.I was right：it is.可知在笔记本电脑上输入文字时不会有什么不适，故选C。
答案： C
6. What is implied in Paragraph 3?
A．The writer doesn’t like the size of her laptop.
B．The writer hates attaching a screen to her laptop.
C．The writer doesn’t think battery life is important.
D．The writer is satisfied with the battery life of her laptop.
解析： 推理判断题。根据第三段可推断作者对自己的笔记本电脑的电池使用时间很满意。
答案： D
7．We learn that a laptop with a quad core________.
A．can be hardly found on the market
B．is the most popular laptop in the market
C．can deal with two tasks at the same time at most
D．allows more tasks at the same time
解析： 推理判断题。根据第四段可推断四核处理器比双核处理器配置更高，配置更高的处理器能同时处理更多的任务，故选D。
答案： D
8．What is the writer’s purpose in writing this passage?
A．To tell us about her laptop.
B．To prove that laptops are good.
C．To tell us how to choose a laptop.
D．To encourage us to buy a laptop.
解析： 作者意图题。通读全文，可知作者主要告诉我们在选择笔记本电脑时应该考虑哪些因素，即我们在购买笔记本电脑时应该如何选择。
答案： C
Ⅳ.语法填空
We high school students do have some growing pains，but we can get rid of them1.______(correct) and wisely.2.______，some of us are upset3.______our body styles and looks.It’s unnecessary and it’s not important at all.We needn’t care about it.It is one’s inner beauty4.______matters.Second，we sometimes seem to be misunderstood by our teachers，parents and classmates.5.______(face) with this，we can find a proper time to have a hearttoheart talk with them，trying6.______(remove) the misunderstanding.Some of us have fewer friends.I think being openminded and friendly will do you good.Third，we may fall behind others,7.______makes us stressed.Actually we can encourage8.______to work efficiently，full of9.______(determine)．At last，some of us don’t have much pocket money，so they feel unhappy.Isn’t it strange？So long as we have some，that’s enough.And we can learn10.______to spend money.
答案： 1.correctly 2.First 3.about 4.that 5.Faced 6.to remove 7.which 8.ourselves 9.determination 10.how
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