Powerpoint所提供的______功能,可对幻灯片进行超文本链接,从而可使对幻灯片由顺序放映的线性结构,变为人为控制放映顺序的超文本结构。
— What would you like to have, meat or fish?
— _____________________.
— ___________________
— Once or twice a week.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
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