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1. 在计算机系统中,操作系统是( )。

A、通用软件
B、系统软件
C、应用软件
D、软件包

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When preparing for your presentation, what should you know?

A. Your purpose.
B. Your audience.
C. Your situation.
D. All of the above.

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In most circumstances, a speaker should avoid passing visual aids among the audience? true or false

A. True
B. False

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Persuasive speakers have an ethical obligation to

A. make sure their goals are ethically sound.
B. learn about all sides of an issue.
C. present their evidence fairly and accurately.
D. All of the above.
E. A and B only.

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When creating a visual aid, you should keep in mind the size of the room in which you will be speaking? True or False

A. True
B. False

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1. 在计算机系统中,操作系统是( )。

A、通用软件 B、系统软件 C、应用软件 D、软件包

When preparing for your presentation, what should you know?

In most circumstances, a speaker should avoid passing visual aids among the audience? true or false

Persuasive speakers have an ethical obligation to

When creating a visual aid, you should keep in mind the size of the room in which you will be speaking? True or False

A、通用软件
B、系统软件
C、应用软件
D、软件包