A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. All computer viruses are manmade. Here are some virus prevention tips.

Do not open any files attached to an e-mail from an unknown, suspicious or untrustworthy source.

Do not open any files attached to an e-mail unless you know what it is, even if it appears to come from a dear friend or someone you know. Some viruses can replicate(复制) themselves and spread through e-mail. Better be safe that sorry and confirm that they really sent it .

Do not open any files attached to an e-mail if the subject line is questionable or unexpected. If the need to do so is there always save the file to your hard drive before doing so.

Delete chain e-mails and junk e-mail. Do not forward(转寄) or reply to any of them. These types of e-mail are considered spam(垃圾邮件), which contains lots of annoying advertisements and useless information.

Do not download any files from strangers.

Be careful when downloading files from the Internet. Ensure that the source is a legitimate(合法的)and reputable one. Verify(证实)that an anti-virus program checks the files on the download site. If you are uncertain, don’t download the file at all or download the file to a floppy(软盘)and test it with your own anti-virus software.

Update your anti-virus software regularly. Over 500 viruses are discovered each month, so you’ll want to be protected. These updates should be at least the products virus signature files. You may also need to update the product’s scanning engine as well.

   Back up(备份) your files on a regular basis. If a virus destroys your files, at least you can replace them with your backup copy. You should store your backup copy in a separate location from your work files, one that is preferably not on your computer.

This passage mainly tells us              .

A. What a computer virus is

B. how to use e-mail safely

C. how to use computers safely

D. how to prevent computer viruses

Which of the following statements about computer virus is TRUE?

A. A computer virus is a kind of worm

B. Not all computer viruses are manmade

C. Computer viruses run according to our wishes

D. A computer virus is a program or piece of code.

When we use e-mail, we should                .

A. open all the files we receive

B. open any file even if we don’t know what it is

C. not open any files if the subject line is questionable

D. forward or reply to junk e-mail.

Which of the following statements is NOT true?

A. We’d better not down load any files from strangers.

B. We’d better download files from a legitimate and reputable source.

C. We should update our anti-virus software regularly.

D. We should store our backup copy in the same location as our work files.


第二节:完形填空(共20小题;每小题1分,满分20分)
请认真阅读下面短文,从短文后各题所给的A、B、C、D四个选项中,选出最佳选项,并在答题卡上将该项涂黑。
Cyber Step-Mother
I’ve often felt “step-parent” is a label  (标签 )we attach to whoever marries into families where children already exist. At  36   that’s how I feel about  37    a step-mother to my husband’s four children.
Over the years, we all learned to    38   our new family arrangement. We enjoyed vacations together, ate   39   meals, and so on.  40  , I continued to feel somewhat like a(n)  41   . There was a boundary line that could not be  42  .
When the children moved to a town five hours   43   , my husband was depressed. In order to    44   regular communication with the kids, we send e-mails. However, if a computer message came  45   to “Dad”, I’d feel forgotten and  46    . If my name appeared along with his, it would make me feel like I was part of their family unit  47   .
Late one evening, as I was checking my e-mail, an “instant message” appeared on the   48  . It was Margo, who was also sitting in front of her computer five hours away. We sent several messages back and forth,   49    the latest news. When we would “chat” like that, she wouldn’t  50   know if it was me or her dad. That night, she didn’t ask and I didn’t identify myself either. At about 11, I commented that I should go to sleep. Her return message  51   , “Okay, talk to you later! Love you!”
As I read this message, a wave of   52   ran through me and I realized that she  53   she was talking with her father. Feeling  54   for not identifying myself, yet not wanting to embarrass her, I simply responded, “Love you too! Good night!”
I felt again the sharp (剧烈的) ache of emptiness (空虚) and otherness. Then, as I was  55  to leave, Margo’s final message appeared, reading “Tell Dad good night for me too.” With tears filled eyes, I turned the machine off.
36.   A. most   B. least    C. present       D. last
37.   A. to be   B. being  C. is D. was
38.   A. adjust B. look forward to  C. expect D. adapt to
39.   A. family       B. school C. meat   D. fish
40.   A. But     B. Though      C. However    D. So
41.   A. outsider     B. member     C. stranger      D. foreigner
42.   A. across B. cross   C. crossing     D. crossed
43.   A. far      B. away   C. far from     D. away from
44.   A. maintain    B. entertain     C. contain       D. obtain
45.   A. addressing  B. signing       C. signed D. addressed
46.   A. neglected   B. devoted      C. ignore D. concerned
47.   A. in short      B. after all      C. above all    D. as a result
48.   A. programme       B. window      C. screen D. keyboard
49.   A. sending      B. exchanging C. discussing   D. commenting
50.   A. unexpectedly     B. carefully    C. fortunately D. necessarily
51.   A. read    B. reads   C. reading      D. wrote
52.   A. sickness     B. anger  C. nervousness       D. sadness
53.   A. must think  B. might have thought   C. must have thought     D. might think
54.   A. responsible B. stupid C. guilty  D. disappointed
55.   A. about  B. due     C. prepare      D. willing

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