the meeting has finally begun after___ A 2 hours later B 2hours of absence C 2 hours' delayD a delay of 2 hours 请说明原因为什么选D?C也对的吧,怎么辨别它们的差别呢.

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themeetinghasfinallybegunafter___A2hourslaterB2hoursofabsenceC2hours''delayDadelayof2hours请说明原因为什么选D?

the meeting has finally begun after___ A 2 hours later B 2hours of absence C 2 hours' delayD a delay of 2 hours 请说明原因为什么选D?C也对的吧,怎么辨别它们的差别呢.
the meeting has finally begun after___ A 2 hours later B 2hours of absence C 2 hours' delay
D a delay of 2 hours
请说明原因为什么选D?C也对的吧,怎么辨别它们的差别呢.

the meeting has finally begun after___ A 2 hours later B 2hours of absence C 2 hours' delayD a delay of 2 hours 请说明原因为什么选D?C也对的吧,怎么辨别它们的差别呢.
答案选D a delay of 2 hours
delay作名词用时,前面可加不定冠词.选项C前缺少冠词a,所以不正确.

absence(n. 缺席,缺勤;缺乏,缺少) after 2 hours delay(2小时延误后)
delay(延误)
显然B不对。