2. 外语
  3. Here is something mysterious. Every human being has a unique arrangement of the skin on his fingers and this arrangement is unch

Here is something mysterious. Every human being has a unique arrangement of the skin on his fingers and this arrangement is unch

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问题     Here is something mysterious. 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【C3】______from parents to children,【C4】______nobody knows exactly why this is the【C5】______. It remains a mystery until today.
    The ridge (脊状物)【C6】______on a person’s fingers does not change【C7】______growth and is not affected by【C8】______injuries. Burns, cuts and other damage to the【C9】______part of the skin will be replaced【C10】______by a new one which bears reproduction of the【C11】______pattern. It is only when the inner skin is injured that the arrangement will be【C12】______. Some criminals make use of this to【C13】______their own finger prints【C14】______this is a dangerous and rare step to【C15】______, which may result in the permanent disability of the figures.
    Finger prints can be made very easily with printer’s ink, so they can be recorded very easily. With some special methods,【C16】______can be achieved successfully within a short time.【C17】______the simplicity and economy of this system, finger prints have often been used as a method of solving criminal cases. A【C18】______man may deny a charge but this may be【C19】______. His finger prints can prove who he is even his【C20】______has been changed by age or accident. Until today, finger prints have helped a lot in solving criminal cases.
【C4】
选项 A、if
B、when
C、though
D、as
答案C
解析 逻辑关系题上文指出一个令人不解的事实，下文指出无人能解开这个谜团，不含假设，让步和原因，故最佳答案为转折关系。
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