2. 外语
  3. The police officer thoroughly ______ the cause of the accident, but they couldn’t find any trace.

The police officer thoroughly ______ the cause of the accident, but they couldn’t find any trace.

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问题 The police officer thoroughly ______ the cause of the accident, but they couldn’t find any trace.
选项 A、explored
B、examined
C、investigated
D、analyzed
答案C
解析 近义词辨析。explore意为“探索，研究”，如：explored the possibilities(探索可能性)；examine意为“检查，调查”，是普通用语，指为了确定某事而仔细地观察、调查，如：examine the room for clues(检查房间以寻找线索)；investigate意为“调查，研究”，指出于怀疑对某人或某事进行正式的询问、调查，如：The police are investigating the robbery．(警察正在调查这起抢劫案。)analyze意为“分析，分解”，如：The scientist analyzed the milk and found it contained too much water．(科学家分析了一下牛奶，发现里面含水分过多。)句中指警察正式地调查，所以应选C)。
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大学英语四级

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