The government should develop system to predict when wildfires occur andgive warnings in t

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A. previous
(答案→)B. reliable
C. reasonable
D. responsible
解析：考查词意辨析。Previous以前的，reliable可靠的，reasonable合乎情理的，responsible负责的，句意：政府应该开发一种可靠的系统来预测何时野外大火发生及时给与警告。故选B。