题目内容
Passage One
Real policemen hardly recognize any resemblance between their lives and what they see on TV if they ever get home in time. There are similarities, of course, but the policemen don't think much of them.
The first difference is that a policeman's real life centers around the law. Most of his training is in criminal law. He has to know exactly what actions are crimes and what evidence can be used to prove them in court. He has to know nearly as much law as a professional lawyer, and what is more, he has to apply it on his feet, in the dark and rain, running down a narrow street after someone he wants to talk to.
Little of his time is spent in chatting to pretty girls or in dramatic confrontations (对峙) with desperate criminals. He will spend most of his working life typing millions of words on thousands of forms about hundreds of sad, unimportant people who are guilty or not of stupid, minor crimes.
Most television crime drama is about finding the criminal: as soon as he's arrested, the story is over. In real life, finding criminals is seldom much of a problem. Except in very serious cases like murders and terrorist attacks where failure to produce results reflects on the fame of the police little effort is spent on searching.
Having made an arrest, a detective (侦探) really starts to work. He has to prove his case in court and, to do that, he often has to gather a lot of different evidence. So, as well as being overworked, a detective has to be out at all hours of the day and night interviewing his witnesses and persuading them, usually against their own interests, to help him.
What does the first paragraph tell us about policemen？
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What is the opinion of specialists on the family？
Passage Two
Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of fingerprints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.
The structure on a person's fingers does not change with growth and is not affected by superficial injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new skin which bears a reproduction of the original pattern. It is only when the inner skin is injured that the arrangement will be destroyed. Some criminals make use of this fact to remove their own fingerprints but this is a dangerous and rare step to take.
Fingerprints can be made easily with printer's ink. They can be recorded easily. With special methods, identification (辨识) can be achieved successfully within a short time. Because of the simplicity and economy of this system, fingerprints have often been used as a method of solving criminal cases. A suspected man denies a charge, but his fingerprints can prove who he is even if his appearance has been changed by age or accident.
When a suspect leaves fingerprints behind at the scene of crime, they are difficult to detect with the naked eye. Special techniques are used to "develop" them. Some of the marks found are incomplete but identification is possible if a print in the size of a quarter of an inch square can be obtained.
Which of the following is NOT true of fingerprints？
What happens in some American families according to Paragraph 2？
What is the main idea of the last paragraph？
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