2. 外语
  3. The officials called for an immediate ______ to determine the cause of the accident.

The officials called for an immediate ______ to determine the cause of the accident.

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问题 The officials called for an immediate ______ to determine the cause of the accident.
选项 A、investigation
B、preparation
C、recognition
D、observation
答案A
解析 题意是：官员们要求立刻______导致这次事故的原因。[A]investigation“调查，研究”，符合题意。[B]preparation“准备”，[C]recognition“认出，识别”，[D] observation“注意；观察”都不符合题意。
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大学英语四级

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