twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

A．Examining

B．Examined

C．Being examined

D．Having been examined

按照卫生部的规定，婴儿不必在1岁内完成的疫苗接种是

A．卡介苗

B．脊髓灰质炎疫苗

C．百白破类毒素

D．麻疹和乙肝病毒疫苗

E．乙型脑炎疫苗