While large numbers of residents in this area the A/H1N1 flu very few suffered death.A.

问题补充：

While large numbers of residents in this area the A/H1N1 flu, very few suffered death.

A. picked up

B. took up

C. brought up

D. caught up

答案：

(答案→)A. picked up

B. took up

C. brought up

D. caught up

解析：本题考查动词短语。句中pick up为“感染上”之意。句意：在这个地区很多居民感染上A型禽流感，但很少致死。