_______ in this way, the result seems unsatisfactory, so we’d better have another try.

A．To look at

B．Looking at

C．Looked at

D．To be looking at

某患者，全麻术后刚返回病室，未清醒，有探视家属在床旁，护士对该家属交代对该患者采用去枕仰卧位的目的是（）。

A.有利于静脉回流

B.防止颅内压降低

C.防止呕吐物流入气管

D.减轻伤口疼痛

E.减少局部出血