题目内容

12. a powerful effect that something, especially something new, has on a situation or person

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13. an animal that is developing either in its mother’s womb or in an egg, or a plant that is developing in a seed

14. the period in a woman’s life when menstruation ceases

15. to create (an embryo) by fertilizing an egg; to become pregnant

在网页中插入视频文件,常用的视频文件格式是( )。

A. swf
B. fla
C. rm
D. flv