2. 外语
  3. A rocket burns propellant rapidly and most rockets carry a supply that last just a few seconds.

A rocket burns propellant rapidly and most rockets carry a supply that last just a few seconds.

admin2017-04-23  30
问题 A rocket burns propellant rapidly and most rockets carry a supply that last just a few seconds.
选项
答案last—lasts
解析 译文：火箭迅速燃烧推进剂，而大多数的火箭携带的补充物仅能维持几秒而已。
分析：考查主谓数的一致。定语从句中，若关系代词在从句中作主语，则从句谓语的数应与先行词一致。本题中，先行词a supply为单数，故last也应用单数形式lasts。
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