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It is essential that international passengers check______at least two hours befo
It is essential that international passengers check______at least two hours befo
游客
2025-06-13
14
管理
问题
It is essential that international passengers check______at least two hours before their flight.
选项
A、on
B、off
C、in
D、up
答案
C
解析
词汇:介词1.这是一道词汇题,选项均为介词。2.出现international passengers,flight等单词说明背景应为机场。机场中,办理登机手续应使用固定搭酉己“check in”。3.check on意为“确认”,check off意为“检查完毕”,check up意为“检查、身体检查”。
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