◎ 题干

8. Usually passengers are required to arrive at _____ one hour before ______ takes off.
A.airport; aircraftsB.the airport, aircraft
C.an airport, a aircraftD.the airport, the aircraft
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“8. Usually passengers are required to arrive at _____ one hour before ______ takes off.A.airport; aircraftsB.the airport, aircraftC.an airport, a aircraftD.th…”主要考查了你对  【可数名词及其单复数】【集合名词】【名词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。