单选题
What's the most likely reason for the new outbreak in China, according to Chinese officials?
【正确答案】
B
【答案解析】文章中提到“China...blamed this most recent outbreak on migratory birds.”即中国政府认为最近禽流感的爆发是由于候鸟的原因。因此[B]“候鸟”正确。[A]“监控的失误”;[C]“缺乏相应的规定”; [D]“缺乏资金”。