The Education Bureau gave a warning to each school without any when the virus of H1N1 hit our city.
A. delay
B. effort
C. schedule
D. consideration
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(答案→)A. delay
B. effort
C. schedule
D. consideration
解析：考查名词： A. delay推延，B. effort努力，C. schedule时刻表，D. consideration考虑，without delay立刻，毫不迟疑，句意是：当H1N1病毒袭击城市的时候，教育部立刻向每个学校发了一个警告。选A。