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A. criminal's B. king's C. lady's D. tiger's

A. criminal's

B. king's

C. lady's

D. tiger's

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发布时间：2022-03-26

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第1题

Juvenile delinquency ___________criminal acts committed by children or teenagers,

Juvenile delinquency （）criminal acts committed by children or teenagers, specifically anyone below the age of eighteen.

A、equal to

B、means

C、that's to say

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第2题

"Wanted by the FBI." To the murderer, or the bank robber, these are the most frightening w

ords in the world. When the criminal (罪犯) hears them, he knows that six thousand trained persons are after him.

Why should he be so afraid？ There are hundreds of cities and thousands of villages where he can hide. There are large forests and deserts where he can lose himself. Besides, he's usually rich with stolen money.

Money can make it easier to hide. With money, the criminal can pay a dishonest doctor to operate on his face and make him hard to recognize. Money can pay for a hideout in some far-off place. But the criminal knows what happened to public enemies such as John Dillinger, Baby Face Nelson, and Machine Gun Kelly. They had plenty of money and good hideouts. Yet one by one they were found by the men of the FBI.

They know every trick the criminal knows and many more. If he makes just one mistake, they'll get him. That's why the man who is hunted can't sleep. That's why he becomes nervous, why he jumps at every sound. When he makes a mistake, he'll no longer be "wanted by the FBI". He'll have been caught.

The FBI began on May 10, 1924. Attorney General Harlan F. Stone chose J. Edgar Hoover, a young lawyer in the Department of Justice, to head the new agency (机构). "What we need is a wholly new kind of police force," he said. "Criminals today are smart. They use stolen cars and even planes to make their gateways. They have learned to open any lock. The criminal would have discovered science. We can't beat them with old methods. We have to train officers to work scientifically."

J. Edgar Hoover quietly went ahead with his plans. He picked his men carefully. They had to be between the ages of twenty-five and thirty-five. He wanted only men with good manners and good character. When working as his officers they would have to meet all kinds of people. Hoover wanted men who could handle a teacup as well as a gun. He chose men so carefully that he made the FBI the hardest service in the world to get into. The FBI cannot help in every police problem. It can look into only certain crimes against the government. Solving all other crimes is the duty of local police forces.

A man wanted by the FBI will find that money is ______.

A．not at all useful

B．very helpful for a while

C．necessary for staying free

D．important and useful

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第3题

It happened one morning 20 years ago. British scientist Alec Jeffrey stumbled upon DNA fin

gerprinting: He identified the patterns of genetic(基因的) material that are unique to almost every individual. His discovery changed everything from the way we do criminal investigations to the way we decide family law. But the professor of genetics at the University of Leicester, UK, is still surprised, and a bit worded, by the power of the technology he released upon the world.

The patterns within DNA are unique to each individual, except identical twins, who share the same pattern. The ability to identify these patterns has been used to convict murderers and to clear people who are wrongly accused. It is also used to identify the victims of war and settle disputes over who is the father of a child.

Jeffrey said he and his colleagues made the discovery by accident while tracking genetic variations. But, within six months of the discovery, genetic fingerprinting had been used in an immigration case, to prove that an African boy really was his parents' son. In 1986, it was used for the first time in a British criminal case: It cleared one suspect after being accused of two rapes and murders and helped convict another man.

DNA testing is now very common. In Britain, a national criminal database established in 1995 now contains 2.5 million DNA samples(样本). The U.S. and Canada are developing similar systems. But there are fears about the stored DNA samples and how they could be used to harm a person's privacy. That includes a person's medical history, racial origin or psychological profile. "There is the long-term risk that people can get into these samples and start getting additional information about a person's paternity or risk of disease," Jeffrey said.

DNA testing is not an unfailing proof of identity. Till, it is considered a reasonably reliable system for determining the things it is used for. Jeffrey's estimates(估计) the probability of two individuals' DNA profiles matching in the most commonly used tests at between one in a billion or one in a trillion.

The passage is mainly about ______.

A．the discovery of fingerprinting by Jeffery

B．the practice of fingerprinting in court

C．the fingerprinting in the present situation

D．the merits and demerits of fingerprinting

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第4题

以下哪个键可以删除光标前的字符（）。

A.R

B.Kin

C.BS

D.修正