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【单选题】
软件按功能可以分为应用软件、系统软件和支撑软件。下面属于系统软件的是A.
编辑软件
B.
操作系统
C.
教务管理系统
D.
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【简答题】A) Stay away for a couple of weeks. B) Check the locks every two weeks. C) Look after the Johnsons’ house. D) Move to another place.
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【单选题】听力原文：M: These shoes are on sale. We can buy two pairs for the coming winter. W: But look at the price. My mother bought the same things at half the price. What are they talking about?
A.
The coming year.
B.
The man's mother.
C.
Buying shoes.
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