【单选题】【消耗次数：1】
链接文件解决了连续文件存在的问题，它（ ）。
①
使用指针存入主存，速度快
②
适合于随机存取方式
③
不适用于顺序存取
④
提高了存储空间的利用率
参考答案：
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【简答题】
将句子翻译成英文：我们可以通过评估更有效地提供城市服务的方法来削减预算。(trim, budget)