En cas d'incendie, vous devez____ les pompiers.
A.appeler
B.dire
C.crier
D.venir
参考答案:A
Mike hasn’t showed up yet. Why do you think ________?
A.he comes late
B.comes he late
C.does he come late
D.will he come late
公安决策的方法论基础可以分为哪三个层次?