.The World Health Organization gave a warning to the public without any when the virus of

问题补充：

.

The World Health Organization gave a warning to the public without any when the virus of H1N1 hit Mexico in April, .

A. delay

B. effort

C. schedule

D. consideration

答案：

(答案→)A. delay

B. effort

C. schedule

D. consideration

解析：名词词义辨析题。A. delay延迟B. effort努力 C. schedule日程 D. consideration 考虑句意：当4月1日墨西哥爆发H1N1时世界卫生组织毫不延迟的向公众发布这一消息。根据语境选A