2. 外语
  3. The flashing red light served as a_____ of danger ahead.

The flashing red light served as a_____ of danger ahead.

admin2016-01-30  10
问题 The flashing red light served as a_____ of danger ahead.
选项 A、predictor
B、caution
C、precaution
D、prevention
答案B
解析 名词词义辨析。根据句意：闪烁的红灯只能用来“警示”危险，其它不符合逻辑。选项中，caution意为“谨慎，警告”，符合句意。故答案为B。
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