题目内容

David was always ______ his best in any danger, but at that moment he froze.

A. atB. inC. forD. on

 

A

【解析】

试题分析：句意：David总是能从容面对任何危险, 但在此刻他却愣住了。固定搭配be at one’s best处在最佳状态，由句意可知选A。

考点: 考查固定搭配的用法。

 

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