2. 外语
  3. Scientists and experts have proved that the pattern of a human being’s finger skin ______. It is ______ for a criminal to deny

Scientists and experts have proved that the pattern of a human being’s finger skin ______. It is ______ for a criminal to deny

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问题 Scientists and experts have proved that the pattern of a human being’s finger skin ______.
It is ______ for a criminal to deny his crime when finger-prints are used to identify him.
选项 A、worth trying
B、successful
C、useful
D、useless
答案D
解析 这依旧是道细节题。根据第三段倒数第二句，可知应选D，“in vain”意思使“徒然的，徒劳无益的”。所以答案为[D]。
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