【正文】 have to leave their fingerprints for further investigations have to submit evidence for their innocence easily escape conviction of guilt be convicted of guilt as well fingerprinting can be unreliable when ____. methods used for blood cell calculation are not accurate different individuals of the same ethnic group may have the same DNA fingerprinting pattern match is by chance left with fingerprints that happen to belong to two different individuals different individuals leave two DNA samples. geicists like Lewontin and Hartl, the current method ____. not so convincing as to exclude the likelihood that two DNA samples can never come from two individuals arguable because two individuals of the same ethnic group are likely to have the same DNA pattern. not based on adequate scientific theory of geics theoretically contradictory to what they have been studying attitude of the Federal Bereau of Investigation shows that ____. data are yet to be collected form various ethnic groups to confirm the unlikelihood of two DNA samples ing from two individual members data of DNA samples should be collected to confirm that only DNA samples form the same person can match data are yet to be collected from various ethnic groups to determine the likelihood of two different DNA samples ing form the same person samples from various ethnic groups should be collected to determine that two DNA samples are unlikely to e from the same person Academy of Sciences holds the stance that ____. testing should be systematized authorized laboratories can conduct DNA testing academy only is authorized to work out standards for testing academy has the right to accredit laboratories for DNA testing 第十七篇答案： CBABB 中國最大的資料庫下載 中國最大的資料庫下載 第十八篇：（ Unit 5,Passage 2） Racket, din clamor, noise, whatever you want to call it, unwanted sound is America’s most widespread nuisance. But noise is more than just a nuisance. It constitutes a real and present danger to people’s health. Day and night, at home, at work, and at play, noise can produce serious physical and psychological stress. No one is immune to this stress. Though we seem to adjust to noise by ignoring it, the ear, in fact, never closes and the body still responds—sometimes with extreme tension, as to a strange sound in the night. The annoyance we feel when faced with noise is the most mon outward symptom of the stress building up inside us. Indeed, because irritability is so apparent, legislators have made public annoyance the basis of many noise abatement programs. The more subtle and more serious health hazards associated with stress caused by noise traditionally have been given much less attention. Nevertheless, when we are annoyed or made irritable by noise, we should consider these symptoms fair warning that other thing may be happening to us, some of which may be damaging to our health. Of many health hazards to noise, hearing loss is the most clearly observable and measurable by health professionals. The other hazards are harder to pin down. For many of us, there may be a risk that exposure to the stress of noise increases susceptibility to disease and infection. The more susceptible among us may experience noise as a complicating factor in heart problems and other diseases. Noise that causes annoyance and irritability in health persons may have serious consequences for these already ill in mind or body. Noise affects us throughout our lives. For example, there are indications of effects on the unborn child when mothers are exposed to industrial and environmental noise. During infancy and childhood, youngsters exposed to high noise levels may have trouble falling asleep and obtaining necessary amounts of rest. Why, then, is there not greater alarm about these dangers? Perhaps it is because the link between noise and many disabilities or diseases has not yet been conclusively demonstrated. Perhaps it is because we tend to dismiss annoyance as a price to pay for living in the modern world. It may also be because we still think of hearing loss as only an occupational hazard. Paragraph 1, the phrase ―immune to‖ are used to mean ___. by by to be seen by by author’s attitude toward noise would best be described as ___. 中國最大的資料庫下載 中國最大的資料庫下載 of the following best states the main idea of the passage? is a major problem。 if corrected too much, he will stop talking. He notices a thousand times a day the difference between the languages he uses and the language those around him use. Bit by bit, he makes the necessary changes to make his language like other people. In the same way, when children learn to do all the other things they learn to do without being taughtto walk, run, climb, whistle, ride a bicyclepare those performances with those of more skilled people, and slowly make the needed changes. But in school we never give a child a chance to find out his own mistakes for himself, let alone correct them. We do it all for him. We act as if we thought that he would never notice a mistake unless it was pointed out to him, or correct it unless he was made to. Soon he bees dependent on the teacher. Let him do it himself. Let him work out, with the help of other children if he wants it, what this word says, what answer is to that problem, whether this is a good way of saying or doing this or not. If it is a matter of right answers, as it may be in mathematics or science, give him the answer book. Let him correct his own papers. Why should we teachers waste time on such routine work? Our job should be to help the child when he tells us that he can’t find the way to get the right answer. Let’s end this nonsense of grades, exams, marks, Let us throw them all out, and let the children learn what al