The World Health Organization gave a warning to the public without any when the virus of H1N1 hit Mexico in April, 2009.
A. delay
B. effort
C. schedule
D. consideration
网友回答
(答案→)A. delay
B. effort
C. schedule
D. consideration
解析：词义辨析。delay：耽搁，延误；effort：努力；schedule：时间表；consideration：考虑，体谅；关心。题干意思是：当H1N1型2009年4月袭击墨西哥时，世界卫生组织毫不犹豫地向人们提出了警告。选A。