In today's world, we rely on computers as never before. They are used for everything from ordering a pizza to running hospitals and military defense systems. Banking and credit card information is stored and accessed by computers. So what happens when a computer gets infected with a virus? One effect is that people's access to their e-mail accounts is cut off. A more serious possible consequence is that billions of dollars could be lost.

     A virus is a computer program that copies itself onto other programs and infects them. Similar to an easily spread disease, a computer virus goes from computer to computer, either adding to or changing the tasks a program is designed to do.

     The first computer viruses were created in the mid '80s and had varying effects. Some caused files to be deleted, or made the letters on the screen appear to fall off. Others displayed a specific message once the computer was turned on.

     Viruses today are much more widespread and dangerous than ever before. Perhaps the most damaging to date has been the "I Love You" virus. "I Love You" appeared in May 2000 and has possibly been the most destructive virus in terms of monetary loss.

     The virus is released when an attachment to a fake e-mail message is opened. By changing the names of files on computers, "I Love You" makes them difficult to access. It also searches for important personal information, including passwords, which it sends to a web site for others to see.

     It is estimated that more than 45 million people in 20 countries have had their computers infected by the "I Love You" virus. Some say the cost of repair and lost business has been more than US$10 billion.

     If you own a computer, it is important to keep it in good health by installing an anti-virus program. If updated frequently, it will protect your e-mail access--not to mention your wallet.

68. What does "virus" mean in the article?

A. An easily spread disease.            

B. A contagious (傳染的) computer program.

C. An extremely small organism (生物) which causes disease.

D. A parasite (寄生蟲(chóng)) in computer.

69. How does "I Love You" virus spread?

   A. It is spread when an e-mail account is opened.  B. It is spread through on-line chatting.

   C. It is spread through e-mail.                  D. It spreads from web site to web site.

70. Which of the following is the best way to guard against virus?

   A. To load an up-to-date anti-virus program into our computer 

B. Not to use an e-mail account.

   C. To upgrade our computer.          

D. Not to use the Internet.

71. What is the purpose of the article?

  A. To warn us against virus.             B. To remind us the importance of being healthy.

  C. To stress the importance of computer.   D. To warn us to economic loss.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：2011-2012學(xué)年江蘇省重點(diǎn)中學(xué)高二5月質(zhì)量檢測(cè)英語(yǔ)試卷（帶解析） 題型：閱讀理解

Who is your role model? Normally the answer to this question would be anyone around you who you find truly inspiring. It could also be someone like J. K. Rowling or Martin Luther King Jr. who have proven to be strong and intelligent people.
However, in today's world, stars are regarded as role models along with the heroes listed above, despite their intentions or actions. Teens attempt to imitate their actions for two major reasons. First, to be fashionable and accepted by popular culture, and second»because stars' actions are so well documented by the media that it seems to grab our attention and turns it to following stars' lives. Much of the reports about stars is shocking and exhibits bad morals or lifestyles that aren't right for teenagers. In addition, almost everything stars do is described beyond truth to make a shocking story by taking it to the next level.
However, teens must take responsibility for their actions. We can't always blame stars for influencing us. Only you have control over yourself and only you choose to do something. Our bodies and actions are in the hands of no one else.
Now, who ever said stars are role models? Whether they choose to be or not, stars set examples as soon as they step into the spotlight. With reporters following and recording every move they make, it is impossible not to be watched and then be imitated. These people influence, teens whether or not they want to. Why should someone who doesn't want to be setting an example set one? So，should we look up to them or to people who are true and good role models? It's our responsibility as teens to know right from wrong, and it's time for us to take responsibility for our actions. In doing so，we will lean toward those inspiring people that want to be setting an example, and follow in their steps to be like them. 
【小題1】According to the first paragraph, _____can usually be role models.

A．political leaders
B．wealthy writers
C．people inspiring others
D．people with great intelligence
【小題2】What are the major reasons for the teens to imitate stars? _____.
A．Interest in stars' life and expectation of getting rich
B．Motivation for being fashionable and inspiration from popular examples
C．Intentions to gain acceptance and encouragement from stars' lifestyle
D．Desires to be stylish and great influence from the mass media
【小題3】The author writes the passage mainly to advise the teenagers to_____.
A．have a control over their own bodies and actions
B．be responsible for their own choices and behaviors
C．follow fashionable stars' steps to be more popular
D．choose right role models according to different reports
【小題4】It can be inferred from the passage that  .
A．stars have the responsibility for teenagers' actions
B．not all famous stars choose to influence teenagers
C．teenagers choose those inspiring people as their role models
D．stars set examples immediately they stepped into the spotlight

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2012-2013學(xué)年黑龍江省海林市高級(jí)中學(xué)高一下學(xué)期期中考試英語(yǔ)試卷（帶解析） 題型：閱讀理解

When my daughter was in the fifth grade, she came home from school almost every night with three or more hours of homework. It was my duty to help her get it done. One night she worked until midnight doing her homework.
I felt annoyed, but I didn’t want the teacher to think I was lazy. So I never complained. I wasn’t sure, but it seemed to me that five hours of homework was a bit too much for a fifth grade student.
Later, I found out that parents and educators have discussed about homework for more than a century. Parents who like more homework want to give their children every advantage to succeed in today’s world. Some educators see homework as a way to help students perform better in tests.
Other parents dislike the recent trend toward more homework. They don’t want to stay up until midnight helping their children. They would prefer to spend their time going to the park or reading some really good books with their children. Added to the opposition(反對(duì))are those who say that homework increases the gap(差距)between the rich and the poor. That’s because middle class families do better when it comes to helping their children with their homework.
So, who is right? Is homework an enemy or a help? According to experts, the truth lies somewhere in the middle.
【小題1】The author thought that her daughter’s homework _________.

A．was too difficult
B．was too much to finish
C．was done more carefully than other students’
D．could be done as long as she helped her daughter
【小題2】The author never complained to the teacher because _________.
A．she was too angry to talk with the teacher.
B．she did not like complaining.
C．she was afraid of being thought lazy by the teacher.
D．her daughter would be annoyed if she complained.
【小題3】In the last paragraph, experts __________.
A．think middle school students should do lots of homework.
B．haven’t come up with any idea to solve this problem.
C．think homework should be given, but not too much.
D．support the idea that homework is good for students.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2011-2012學(xué)年湖北省黃岡市高三精品模擬試卷（四）英語(yǔ)（解析版） 題型：閱讀理解

GET YOUR DEGREE AT HOME!

Have you ever wondered what a Degree might be worth to you in your job or career?It means a lot---Americans with an Associate Degree average nearly $10,000 more in yearly earnings than those with just a High School Diploma．

Harcourt Learning Direct offers you a way to get a Specialized Associate Degree in 11 of today’s growing fields--without having to go to college full time．With Harcourt,you study at home，in your spare time---so you don’t have to give up your present job while you train for a better one．Choose from exciting majors like Business Management，Accounting，Dressmaking & Design，Bookkeeping，Photography，Computer Science，Engineering，and more!

Your training includes everything you need

Books，lessons，learning aids--even professional quality tools and equipment--everything you need to master your training and move ahead to a new career is included in the low tuition(學(xué)費(fèi))price you pay．

Your education is nationally recognized!

Nearly 2,000 American companies---including General Electric,IBM,Mobil,General Motors,Ford,and many others have used our training for their employees．If companies like these recognize the value of our training，you can be sure that employers in your area will，too!

Earn yomr degree in as little as two years!Get a career diploma in just six months!

The career of your dreams is closer than you think!Even if you have no experience before，you can get valuable job skills in today’s hottest fields!Step-by-steplessons make learning easy．Prepare for promotions，pay rises，even start a business of your own!

Send today for FREE information about Harcourt at-home training!

Simply fill in your name and address on the coupon(登記表)above．Then,write in the name and number of the one program you’re most interested in,and mail it today．We’ll rush you free information about how you can take advantage of the opportunities in the field you’ve chosen．Act today!

Mail coupon today!Or call the number below 1-800-372-1589. Call anytime．24 hours a day，7 days a week．

www.harcourt-learning.com

E-mail：harcourt@learning．com

1.Who will probably answer this advertisement?

A．College students preparing to work in some big companies．

B．College students preparing to study for a degree．

C．High school graduates preparing to have at-home training．

D．High school graduates preparing for college entrance examinations．

2.How can people get a Specialized Associate Degree?

A．They can study abroad for two years．

B．They can work in some big famous companies．

C．They can study in their spare time．

D．They can do full-time learning at schoo1．

3.Harcourt training has been used by the following companies for its employees except     .

A．MobiI

B．Ford

C．IBM

D．Harvard University

4.If you want to contact Harcourt Learning Direct，you can      .

A．send an E-mail

B．visit the office on weekdays

C．send a letter not later than today

D．make a call on weekdays only

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2011年安徽省六校教育研究會(huì)高二素質(zhì)測(cè)試英語(yǔ)題 題型：填空題

Work and study today are very different from what they were like 20 years ago. In the past, people often worked in the same job from graduation till retirement. Today, however, everyone needs to learn new things constantly on the job and it is common practice for people to go back to school from time to time in order to keep up with the fast changing world. Changing jobs has also become common practice for many people as they aim to enrich their work experience, develop new skills and meet new challenges. In today’s world of constant innovation (創(chuàng)新，革新), you can’t afford to think that you have finished with your studies. If you don’t want to be all behind in today’s competitive job market, you have to commit yourself to lifelong learning.

    Effective lifelong learning is not only a matter of collecting formal qualifications. It’s also about forming habits that help you study, and developing attitudes that make you receptive (善于接受的，能容納的) to learning.

    Habits that help you study include time management, note taking, analysis and writing. These habits are useful but you won’t learn effectively unless you have the right attitude. Being open-minded is important because learning something new often means challenging the ideas you have already hold. Expecting to learn something that is both new and valuable will in fact help you to do so. For successful lifelong learning, you must take these study habits and attitudes with you when you leave school to start on your adult lives.

    School is the ideal place to gain lifelong learning skills because you have support and resources, and you are young and naturally more open to learning. If you invest time in developing your study skills now, you’ll be enjoying the rewards for the rest of your life. In school you also have the time to develop learning skills. Many adults are sadly too busy to develop learning skills once they start work.

    Today you cannot assume that completing a course will give you qualifications that will see you through your career. Change is unpredictable and you must be ready for it. In fact, there is no profession that doesn’t require continuous learning. But this is not something to be scared of. All you need to do is to develop learning skills and learn how to learn so that you are ready to keep yourself up-to-date with changes that come your way. Be open-minded, have the right attitude, and be ready for the next challenge.

Title: The Importance of Lifelong Learning

_____1.______ between the work and study of today and those of 20 years ago

¨         People in the past often ___2.____ to the same job from graduation till retirement.

¨         People today need to learn new things ____3.____ on the job.

¨         Going back to school to learn new things becomes common practice.

Effective lifelong learning includes much essence.

¨         Collecting formal qualifications.

¨         Forming habits that are ____4.____ in studying.

¨         ___5.___ attitudes that make you receptive to learning.

Study habits and attitude needed for successful lifelong learning

¨         Time management

¨         Note taking

¨         __6.___ and writing

¨         Being open-minded

____7.____ for school being the ideal place to gain lifelong learning skills.

¨         Learners have support and resources when in school.

¨         Learners in school have far more time to develop learning skills, _____8.____ with adults who have left school.

How to be a lifelong ___9.__

¨         Be ready for the unpredictable changes.

¨         Have learning skills __10.__ and learn how to learn.

¨         Be open-minded, have the right attitude, and be ready for the next challenge.

 

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2012屆內(nèi)蒙古赤峰市高二下學(xué)期四月月考英語(yǔ)卷 題型：書(shū)面表達(dá)

書(shū)面表達(dá)（滿分25分）

  最近的一項(xiàng)調(diào)查表明如今的中國(guó)青年的人生目標(biāo)比過(guò)去要顯得多元化。這種選擇的變化表明社會(huì)在進(jìn)步，人們的生活目標(biāo)較以前更為實(shí)際。

 

 

 

[參考詞匯]   多元化（的）：diversified     調(diào)查對(duì)象：respondent

[寫(xiě)作要求]

以上述信息為材料寫(xiě)一段短文。字?jǐn)?shù)100-120.                        

Chinese Young People's Life Goals Today

A recent survey shows that in today's society, Chinese young people's               _____________________________________________________________________

_______________________________________________________________________________

 

查看答案和解析>>

同步練習(xí)冊(cè)答案