肺炎最常见的病原体是()
A.细菌
B.病毒
C.支原体
D.衣原体
E.军团菌
参考答案:A
解析:细菌、病毒、支原体、衣原体、军团菌等病原微生物菌可引起肺炎,其中以细菌性肺炎最为常见。
22.— Is there anything special in today’s newspaper ?
— Yes, the report says that ______ car went out ______ of control on a highway north of the city.
A.the; the
B.a; the
C.the; /
D.a; /
人体触电的种类有()
A.单相触电
B.两相触电
C.跨步电压触电
D.接触电压触电