On Oct. 12, 1989, some Chinese scientists were working at the computers to look for the information they needed. Suddenly they saw a lot of very bright spots crossing the computer’s screens. At the same moment the computers were working much slower. To find out what was happening, they stopped their work to check some parts of the computers. To their horror, they found out that most of their stored information was got rid of by computer viruses (病毒). Obviously all these computers had been infected (传染) by computer viruses.It is said that the computer viruses were made by a group of young men fond of playing tricks. They all have excellent education. They created the viruses just to show their intelligence. This kind of computer viruses is named Jerusalem (耶路撒冷) Viruses. These viruses can stay in computers for a long time. When the time comes they will attack the computers by lowering the functions, damaging normal programs or even getting rid of all the information.We now come to know that Jerusalem Viruses often attack computers on Fridays and that they are spreading to a lot of computers. Among the countries that suffered computer viruses last year are Britain, Australia, Switzerland and the US. But till now, how to get rid of the terrible viruses remains a problem. According to the passage, computer viruses seem to ().
A. have been in nature for years
B. be difficult to get rid of at present
C. exist in any computers
D. be able to be got rid of in the near future
查看答案
房地产中介服务机构实行年检制度,由房地产行政主管部门负责,并公布年检结果。 ( )
A. 对
B. 错
One silly question I simply can’t understand is "How do you feel" Usually the question is asked of a man in action—a man on the go, walking along the streets, or busily working at his desk. So what do you expect him to say He’ll probably say, "Fine, I’m all right," but you have put a bug (小虫子) in his ear—maybe now he’s not sure. If you are a good friend, you may have seen something in his face, or his walk, that he overlooked (忽略) that morning. It starts worrying him a little. First thing you know, he looks in a mirror to see if everything is all right, while you go merrily on your way asking someone else "How do you feel" Every question has its time and place. It’s perfectly acceptable, for instance, to ask "How do you feel" if you’re visiting a close friend in the hospital. But if the fellow is walking on both legs, hurrying to take a train, or sitting at his desk working, it’s no asking him that silly question.When George Bernard Shaw, the famous writer of plays, was in his eighties, someone asked him, "How do you feel" Shaw put him in his place. "When you reach my age," he said, "either you feel all right or you’re dead.\ According to the writer, greetings such as "How do you feel" ().
A. show one’s consideration for others
B. are a good way to make friends
C. are proper to ask a man in action
D. generally make one feel uneasy
W: Bob It’s me, Barbara. Am I ringing at a bad timeM: No, no. That’s all right. Is it something importantM: No, not really. Some American friends are here for a few days and they want to go for a meal this evening. I think maybe you’d like to come.M: I’m afraid I can’t. I’ve got a bad headache.W: Oh, have you I’m sorry. Why don’t you take a couple of aspirins and lie down for a bit You’ll be all right in half an hour.M: Yes. I know, it’s not just the headache. I’m afraid I really ought to do my washing this evening and I’ve got to write home to my parents, too.W: All right. Some other time then. Well, have a nice evening, Bob.M: Wait a minute, Barbara. I’ll ring you early tomorrow morning.W: It’s OK. See you then. What is the woman planning to do this evening()
A. To see some Americans off.
B. To visit Bob.
C. To have dinner with some American friends.
W: Are you glad that you came to WashingtonM: Yes, indeed, I’d considered going to New York or Boston, but I’ve never regretted my decision. Where is the man now()
A. In Washington.
B. In New York.
C. In Boston.