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

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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
单项选择题
In C language, the result of the logical（）operator is 1 if the value of its operand is 0, 0 if the value of its operand is non-zero.

A．AND
B．NOT
C．OR
D．EOR
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