我国发生的严重急性呼吸综合征(SARS),很快波及到许多省市,这种发病情况称为()
A.暴发
B.流行
C.季节性升高
D.周期性流行
E.长期变异
参考答案:A
It is important to understand the crime’s nature to prevent crime. As we know, most crimes are about things, not ____ the persons.
A.from
B.on
C.to
D.against
A.9 m/s
B.9.6 m/s
C.10 m/s
D.10.2 m/s