2. 外语
  3. In some California housing estates, a key alone is insufficient to get someone in the door; his or her voiceprint must also be__

In some California housing estates, a key alone is insufficient to get someone in the door; his or her voiceprint must also be__

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问题 In some California housing estates, a key alone is insufficient to get someone in the door; his or her voiceprint must also be______. (中国科学院2013年10月试题)
选项 A、duplicated
B、perceived
C、acquired
D、verified
答案D
解析 A项“duplicate”意为“复制”；B项“perceive”意为“感知，感受”：C项“acquire”意为“取得，获得”；D项“verify”意为“证明、证实，核实、查清”，本句是说需要验证他们的声音，因此选择D项。
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