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【题目】New technology should provide a ________ firewall against hackers (黑客) .

A.swiftB.sincereC.straightD.secure

【答案】D

【解析】

考查形容词辨析。句意:新技术应该为黑客提供一个安全的防火墙。A. swift敏捷的;迅速的;B. sincere诚挚的;C. straight直的;D. secure安全的;无虑的。根据句意故选D

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