The reason why this is spreading so fast is that you are getting it from people you know. You should never open documents or attachments from people you don’t know. People who get an unexpected e-mail with the ―important message‖ subject line should delete it immediately and not open the message.
28. Thousands of computers were attacked by the Melissa virus _______________. A. covered with an important message
B. under cover of a message needing immediate attention C. under the clothes of an important e-mail D. with a beautiful coat
29. The Melissa virus made a computer _____________________. A. receive tens of bad e-mails B. fire at many sick e-mail messages C. send out scores of infected messages
D. burn with a fire because of many infected e-mails
30. After the attack by the Melissa virus a computer ________________. A. was slightly damaged B. became entirely out of order
C. could not send out any e-mail any longer D. would have to be thrown away
31. If you opened an infected file by Melissa virus，the virus would ______________. A. damage the user’s address book at once B. soon spread through the user’s list of address C. let the first 50 addresses go out of the computer D. change the user’s address book in the computer
D
Norah had a cottage on a cliff above a big bay. In winter it could be very nasty because of strong winds and sea spray. In fact, when a gale was blowing, Norah and her husband got used to sleeping in a small room downstairs, because their bedroom upstairs, which faced the gales, had a very big window, and they were afraid that an extra violent gust might break it and blow pieces of broken glass over them.
Also, the salt spray from the sea put an end to many of the colourful plants Norah planted in her garden. She tried putting up a fence to protect them, but the wind just hit it, went up over the top and then down the other side, so in the end she filled the garden with trees and bushes that liked salt.
But most of the summer Norah enjoyed her cottage and garden very much. At weekends she could sit out of doors in the sun, looking at the beautiful view, with interesting ships and boats passing by, and she could very easily cycle down to the sea for a swim.
Now, Norah and her husband had plenty of friends and relations. In the summer lots of them used to come to enjoy the beautiful place, and in the end it really became quite annoying for Norah and her husband. When they were at home, they found friends and relations arriving, expecting to be given unlimited drinks and meals, and to sit in the sun for hours, talking as if Norah and her husband had nothing else to do but entertain and listen to them.
This went on for several years. Norah did not wish to appear rude by refusing to let her friends and relations in, but on the other hand, she was getting tired every summer.Then one day Norah was complaining about this to her hairdresser while she was doing her hair. ―You’re disturbed by too many uninvited guests, are you?‖ said the hairdresser. ―Why don’t you try my way of escaping?‖
―What’s that?‖ asked Norah.
―Well,‖ the hairdresser answered, ―when the bell rings, I put on my coat and take my shopping bag. If it’s someone I don’t