单项选择题

（）processing offers many ways to edit text and establish document formats. you can easily insert, delete, change, move and copy words or blocks of text.

A．Data
B．Database
C．Word
D．File

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单项选择题
The（）is a temporary storage area that you can use to copy or move selected text or object among application.

A．cache
B．pool
C．buffer
D．clipboard
单项选择题
A floating constant consists of an integer part, a decimal point, a fraction part, an e or E, and an optionally signed integer（）

A．exponent
B．order
C．superfluous
D．superior
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