2. 外语
  3. Because threats change．根据题干中的security measures定位到原文最后一段首句But Mr．Hawley insists that security measures should not rely solely on

Because threats change．根据题干中的security measures定位到原文最后一段首句But Mr．Hawley insists that security measures should not rely solely on

admin2009-08-19  71
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答案Because threats change．
解析 根据题干中的security measures定位到原文最后一段首句But Mr．Hawley insists that security measures should not rely solely on machines however they are sophisticated，as threats change．题目问的是为什么安保措施不应完全依赖于仪器。原文最后一段首句提到，Hawley认为安保措施不应仅仅依靠仪器，因为威胁总在不断变化。题干中的depend entirely on machines是对原文rely solely on machines的同义转述，原文中的as．．．即表示原因，故答案为because threats change。
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