A-A+
The flashing red light served as a________of d
问题详情
The flashing red light served as a________of danger ahead.
A．predictor
B．caution
C．precaution
D．prevention请帮忙给出正确答案和分析，谢谢！
参考答案
正确答案：B
解析：A. predictor预测器，预报仪器。B．caution谨慎，警告。C．precaution预防措施或方法。D．prevention预防，妨碍。
