The only solution to rubbish problem for a nation which now spends more on wrapping food than it pays farmers to produce it, is recovering () the packaging materials for commercial as well as for conservation reasons.

A. on sale

B. on the spot

C. on a large scale

D. on all sides

一天傍晚，某医院急诊科送来一突发急病、身份不明、无家属陪送的患者，患者目前严重损伤伴休克。此时医护人员应该（）

A.找到家属并来院后再抢救

B.待查明损伤原因后再抢救

C.等交足了预付金后再抢救

D.交足一定医药费后再抢救

E.在仔细分析病情的同时，争分夺秒地抢救