Câu hỏi trắc nghiệm (10 câu):
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Câu 1: Mã câu hỏi: 398360
Read the passage carefully and choose the correct answer
Although computers are considered the most perfect and effective devices in our modern time, we cannot avoid some certain problems when we are working on a computer. Letters and phone conversations are private. It is against the law to open someone’s mail without permission or to listen secretly to someone's telephone conversation. And now there are laws to protect the privacy of e-mail. It is also against the law to read the messages that a person sends or receives on a computer. Although each person has a secret password for his or her e-mail, sometimes the passwords are discovered by hackers and the mail box is opened.
Recently several companies that do business on the Internet have been attacked. The attackers sent huge amounts of useless e-mails to the Web sites of these companies. The effect was to slow or stop the ability of the companies to do their business. Such actions are known as “denial of service” attacks. The companies say they may have lost millions of dollars because they were not able to provide goods and services during the attacks. Most of the companies were able to solve the problem in about three hours. The victims of the attacks included some of largest and most successful companies on the Internet, such as Yahoo, Amazon, and Com and E-Trade. The police have investigated the attackers. The computer industry leaders have discussed the electronic attacks and the problems of computer crime. They suggest that a person who is found guilty of such a crime should be sentenced to at least 10 years in prison.
It is _____ to read the messages that a, person, send or receive on a computer.
- A. legal
- B. illegal
- C. encouraged
- D. advisable
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Câu 2: Mã câu hỏi: 398361
Which sentence is true?
- A. It is quite secret to send or receive messages through the Internet.
- B. We need a password to open an e-mail box.
- C. We never have problems with e-mail.
- D. E-mails on the Internet are open letters.
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Câu 3: Mã câu hỏi: 398362
What happened to some companies that do business on the Internet?
- A. They were electronically attacked.
- B. They were closed because they are broke.
- C. They stopped working because all computers were out of order.
- D. They stopped working because of no power.
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Câu 4: Mã câu hỏi: 398363
What did the hackers do?
- A. They attacked the network by computer viruses.
- B. They made a lot of orders through the Internet.
- C. They sent a lot of e-mails to the companies.
- D. They sent useless e-mails to the Web sites of these companies.
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Câu 5: Mã câu hỏi: 398364
Most of the companies ____.
- A. could solve the problem
- B. could not solve the problem
- C. closed
- D. were sentenced to about ten years in prison
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Câu 6: Mã câu hỏi: 398365
Choose the best answer
Keep children _________ from the fire.
- A. in with
- B. from
- C. away
- D. back
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Câu 7: Mã câu hỏi: 398366
I do not use those things any more. You can ________ them away.
- A. get
- B. fall
- C. throw
- D. make
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Câu 8: Mã câu hỏi: 398367
Please let me _________ I promise not to do it again.
- A. off
- B. on
- C. up
- D. in
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Câu 9: Mã câu hỏi: 398368
Because of heavy rain, the game was ________ for a few days.
- A. taken out
- B. put off
- C. set up
- D. gotten away
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Câu 10: Mã câu hỏi: 398369
The passengers had to wait because the plane _______ off one hour late.
- A. took
- B. turned
- C. cut
- D. made
