Young people who have got jobs may realize university lessons can't be the only preparation for

all of the situations ________ appear in the working world.[      ]

A. where  

B. when

C. that  

D. what

患者男，因口腔颌面部创伤致舌体裂伤，出血明显，口底肿胀，来院急诊，最有效合理的止血方法是（）

A.注射止血针

B.指压患侧的颈总动脉

C.用纱布块填塞止血

D.创口缝合止血

E.做颈外动脉结扎术