2. 外语
  3. As we know, computers are used _________________________(有效率地储存和检索信息).

As we know, computers are used _________________________(有效率地储存和检索信息).

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问题 As we know, computers are used _________________________(有效率地储存和检索信息).
选项
答案to store and retrieve information efficiently
解析 本题考查对动词use用法的掌握。use可用于use something to do something 形式，空前用的是被动语态，因此 used后应直接接动词不定式to。“有效率地”用efficiently表达；“储存和检索信息”可用store and retrieve information表达。
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大学英语六级

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