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  3. Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and exper

Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and exper

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问题    Every human being has a unique arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the【C1】______of finger-prints and discovered that no【C2】______similar pattern is passed on from parents to children, though nobody knows why this is the case.
   The ridge【C3】______on a person’ s fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one which bears a reproduction of the【C4】______pattern. It is only when the inner skin is injured that the arrangement will be【C5】______. Some criminals make use of this fact to【C6】______their own finger-prints but this is a dangerous and rare step to【C7】______.
   Finger-prints can be made very easily with printer’s ink. They can be recorded easily. With special methods, 【C8】______can be achieved successfully within a short time. Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A【C9】______man may deny a charge but this may be in vain. His finger-prints can prove who he is even if his【C10】______has been changed by age or accident.
   A)take B)uniqueness C)harmed D)identification
   E)structure F)naturally G)exactly H)position
   I)appearance J)original K)destroyed L)diminish
   M)doubtful N)remove O)suspected
【C7】
选项
答案A
解析 此处为不定式作后置定语，修饰step。根据固定短语take a step“采取措施”可知，take符合句意，故选A。
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大学英语四级

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