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题目

Somehow she rose over her excitement, though, and concentrated all she could on the task ___ .A. off handB. with handC. at handD. before hand

Somehow she rose over her excitement, though, and concentrated all she could on the task ___ .

A. off hand

B. with hand

C. at hand

D. before hand

题目解答

答案

C. at hand

解析

本题考查固定短语的用法，核心在于理解介词短语与名词的搭配逻辑。关键点在于：

"task"后需接表状态的介词短语，修饰任务的性质；
"at hand"表示当前需要处理的任务，符合语境中"集中精力"的逻辑；
其他选项如"off hand"（即兴）、"before hand"（提前）均与语境不符。

选项分析

A. off hand

含义：表示"即兴、未经准备"（如：know sth off hand）
错误原因：任务不可能是"即兴的"，与"集中精力"矛盾

B. with hand

错误原因：无此固定搭配，且逻辑不通（手部动作与任务无关）

C. at hand

含义：表示"当前需要处理的"（如：the problem at hand）
正确性：与"集中精力"形成完整逻辑（当前任务需要专注）

D. before hand

含义：表示"提前"（如：finish before hand）
错误原因：任务若"提前"，无需再"集中精力"

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