2. 外语
  3. Every human being has a【C1】______ arrangement of the skin of his fingers and this arrangement is unchangeable. Scientists and ex

Every human being has a【C1】______ arrangement of the skin of his fingers and this arrangement is unchangeable. Scientists and ex

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问题     Every human being has a【C1】______ arrangement of the skin of his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of fingerprints and discovered that【C2】______ exactly similar pattern is passed from parents to children, though nobody knows why this is the case.
    The ridge structure on a person’s fingers does not change with growth and is not affected by【C3】______ injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one which【C4】______ a reproduction of the original pattern. It is only when the inner skin is injured【C5】______ the arrangement will be destroyed. Some criminals make use of this fact to remove their own finger-prints,【C6】______ this is a dangerous and rare step to take.
    Finger-prints can be made very easily with printer’s ink. They can be recorded easily. With special methods,【C7】______ 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【C8】______ . A suspected man may【C9】______ 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.
【C6】
选项 A、but
B、or
C、however
D、unless
答案A
解析 本句相对于上句而言，语气发生了明显的转折，故需填入表示转折关系的连接词but。本句的意思是："有些罪犯通过破坏皮肤内层的方式来改变自己的指纹，但这样做很危险，也很少有人采取这种行动。"C项however虽然也可表示转折关系，但空格后无逗号，它在此处是副词，不能起连接两个并列句的作用。
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