阅读理解。

      根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项

为多余选项。

     Here are some easy steps for you to stay safe and secure on the Internet.

        1   Never give out your full name , address and phone number, unless it is a safe site or it is

a well- known site.

     Protect your money. Do not give out your card information unless it is a secure site. You can

tell if the site is safe by looking at the lower part of your screen.    2  If it is locked, the site is secure.

"Unlocked" means that you should not give a card number.

     Don't believe "Get Rich Quick!" If it sounds too good to be true- it is! If you get an e-mail that

says you can make thousands of dollars in a few days, it isn't true. Most likely it will cost you in the

end.   3      

      A good virus scan(杀毒软件).Update your virus scan.   4   When you buy a virus scan, it may

have been on the shelves for months, so you need to update it frequently.

        5  Do not open e-mail attachments(附件)that are programs. Receiving these programs in e-mail

is harmless, but opening and running them can be dangerous.

A. There is a small lock.

B. Stay away from these offers!

C. New viruses come out daily.

D. There are always some unsafe sites.

E. Keep your main e-mail address private.

F. Don't give out personal information.

G. Protect yourself from dangerous e-mail viruses.