单选题 —Excuse me, when does Flight CZ3391 take off?
—One moment, please. I'll ______ it.
A. look up B. take away C. give back D. turn down

【正确答案】 A

【答案解析】[解析] 考查动词短语。look up意为“查找”；take away意为“拿走”；give back意为“归还”；turn down意为“关小”，根据句意“‘请问CZ3391次航班什么时候起飞?’‘请等一下，我给你查一下’”，可推断答案为A。