Which of the following italicized phrase indicates a purpose?

A.She said it for fun，but others took it seriously. B.For all its efforts, the team didn’t win the match. C.Linda has worked for the firms for 20 years. D.He set out for Beijing yesterday.

下列选项中，依据《普通高中美术课程标准（实验）》，属于美术课程基本理念的是（）。

Activities such as problem solving, decision making and opinion exchanging are typical practices in（ ）.

下列选项中，对“课件应用”理解正确的是（）。

一个袋子里有8个黑球，8个白球，随机不放回地连续取球5次，每次取出1个球，求最多取到3个白球的概率。

一次实践活动中，某班甲、乙两个小组各20名学生在综合实践基地脱玉米粒，一天内每人完成脱粒数量（千克）的数据如下：甲组：57,59,63,63,64,71,71,71,72,75,75,78,79,82,83,83,85,86,86,89。乙组：50,53,57,62,62,63,65,65,67,68,69,73,76,77,78,85,85,88,94,96。

（1）分别计算甲、乙两组学生脱粒数量（千克）的中位数;（2分）（2）比照甲、乙两组数据，请你给出2种信息，并说明实际意义。（5分）