题目内容
It began as a game: high school and college students studying computer technology figured out they could use personal computers to break into telephone company computers and make free, long-distance telephone calls. These young computer wizards (奇才) soon gained the nickname "hackers (黑客)".
Police put the collar on a few hackers, but many went on to even more complex hacking. One hacker was arrested for making illegal telephone calls and later used a jailhouse phone to alter a police officer's credit records to get back at the officer for arresting him. The hacker also used a computer to alter his college records to give himself better grades.
As hackers gained experience, they began invading (侵入) computers at banks, airlines and other businesses. In one scheme, a hacker instructed an airline's computer to give him free airplane tickets.
The U.S. government is worried hackers may break into its sophisticated (复杂的) networks of defense computers. The government's classified secrets are vulnerable (脆弱的) because thousands of government computers are connected by telephone lines that hackers can tap into.
In November 1988, a college student tapped into a non-classified U.S. Defense Department computer network called Arpanet. The hacker injected a computer program that left copies of itself throughout Arpanet. Some hackers use each "viruses" to destroy all the data in a computer. But in this case, government officials shut down the network before the program reached every computer in the system. Shutting down the system angered many researchers who were using the computers. The hacker turned himself in to police and told them how to get his program out of the computer system. He was charged with a crime.
The incident put the spotlight on computer hacking in the United States. Many companies have hired experts to protect their computers from hackers, and many computer experts now advise companies on how to protect their computers.
The U.S. government believes foreign governments have hired hackers to try to break into top-secret defense computers. It fears a hacker could inject a virus into military computers that would erase all the data during a war.
Experts disagree over whether a computer network can ever be safe from hacking. But in the future, some of the most brilliant minds in the U.S. will be working to frustrate the efforts of computer hackers and spies.
1.The main idea of the article is _____.
A.computer hackers only want to make free long-distance phone calls
B.the government wants to hire computer hackers to spy on the Russians
C.computer hackers are a threat to private companies and government secrets
D.many companies have hired experts to protect their computers from hackers who carry viruses
2.A computer "virus" is like a human virus because it _____.
A.makes a computer cough and throw up
B.spreads from one computer to other computers
C.can erase a person's doctor bills
D.requires regular visits to a doctor
3.U.S. government computers are vulnerable to a hacker because _____.
A.the government always pays its telephone bills on time
B.the Russians know what's in the U.S. computers
C.viruses attack only government computers
D.many government computers are connected by telephone lines
4.In the future _____.
A.Some of the most brilliant minds in America will be working to try to stop computer hackers and spies
B.hackers will begin invading computers at banks, airlines and other businesses
C.many computer hackers will be arrested for making free telephone calls
D.some computer hackers will turn themselves in to the police
CBDA
In 1883, an imaginative engineer named John Roebling decided to build a spectacular bridge connecting New York with Long Island. However, bridge building experts throughout the world thought that this was a pipe dream. It was not practical. It had never been done before.
But Roebling refused to listen to them. He thought about the bridge day and night and he knew deep in his heart that it could be done. After much discussion and persuasion he convinced his son Washington, who was a promising engineer himself, that the bridge in fact could be built.
Working together for the first time, the father and son developed concepts of how it could be accomplished. With great excitement, they hired their crew and began to build their dream bridge.
The project started well, but several months after it began, a tragic accident on the site took the life of John Roebling. Washington was so seriously injured that he was never able to walk, talk or even move again.
"We told them so", "Crazy men and their crazy dreams", "It's foolish to chase wild visions", the critics said and most thought the project should be scrapped since the Roeblings were the only ones who knew how the bridge could be built. In spite of his handicap Washington still had a burning desire to complete the bridge and his mind was still as sharp as ever.
Washington's wife tried to inspire and pass on her husband's enthusiasm to some of his friends, but they were too daunted by the task. As he lay in his hospital room, an idea suddenly hit him. All he could do was move one finger and he decided to make the best use of it. By moving this finger and tapping it on his wife's arm, he slowly developed a code to communicate with her. Then he used this method to tell his wife what the engineers should do. It seemed crazy but the project was under way again. For 13 years Washington tapped out his instructions with his finger on his wife's arm, until the bridge was finally completed.
Today the spectacular Brooklyn Bridge stands in all its glory as a tribute to the triumph of one man's spirit and his determination not to be defeated by circumstances.
【小题1】_ What did most people think about Roebling's idea to build the bridge?
A.It would never become a reality. | B.Washington was not experienced enough. |
C.It would take a lot of time. | D.Finding the money would be impossible. |
A.unpleasant | B.scared | C.amazed | D.determined |
a. Roebling convinced his son.
b. Washington found a new way to communicate.
c. They hired the crew.
d. The bridge was completed.
e. Roebling wanted to build a bridge.
f. There was a tragic accident.
A.e, a, c, f, d, b | B.e, a, f, b, c, d | C.e, f, a, b, c, d | D.e, a, c, f, b, d |
A.She knew sign language very well. |
B.She was devoted to her husband. |
C.She developed a code to communicate with her husband. |
D.She helped her husband design the plan. |
A.Success will come with the passing of time. |
B.Struggles are exactly what we need in our lives. |
C.Even the most distant dream can be realised with a never-say-die attitude. |
D.The people who make a difference in our life should be remembered forever. |