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【多选题】
What`s the purpose of the security check for passengers?A.
happiness
B.
passengers` safety
C.
relax
D.
aircrafts` safety
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反馈参考答案：
举一反三
【简答题】计划工作具有秩序性,最主要的秩序性表现为计划工作的 ________ 和 ________ 。
【单选题】Background music may seem harmless, but it can have a powerful effect on those who hear it. Recorded background music first found its way into factories, shops and restaurants in the US. But it is soo...
A.
help to create a soothing atmosphere
B.
decrease production in factories
C.
promote sales in all places
D.
help to have more meals
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