单选题 The outbreak of the Ebola virus in Africa could be ______the poor medical apparatus, ineffective quarantine policy and unrest social conditions.

A、 put away to
B、 put back to
C、 put down to
D、 put through to

【正确答案】 C

【答案解析】解析：本题考查动词短语辨析。put away意为“放好，收起”；put back意为“放回；推迟；拨回”。put down to意为“归因于”，符合“匮乏的医疗器械、无效的检疫政策和动荡的社会环境应该是造成病毒爆发的原因”的语义，故答案为put down to。put through to意为“为……接通电话”。