I suddenly found myself ____ down the street when I found a crowd of people gathered in the street corner.

A．run

B．running

C．runs

D．ran

新生儿期应该进行的预防接种有（）

A.卡介苗

B.乙肝疫苗

C.脊髓灰质炎疫苗

D.卡介苗和乙肝疫苗

E.卡介苗和脊髓灰质炎疫苗