根据所给汉语提示，写出空缺处单词正确形式。

1. We made Li Lei as ______ (队长) of our football team.

2. All of Zhang Yimou's films are ______ (极好的).

3. I have looked for my pen _____ (任何地方), but I can't find it.

4. Most of the foreigners think Chinese food is ______ (美味的).

5. The ______ (音乐家) plays the piano very well.

一根轻质弹簧悬挂在横梁上，在竖直方向上呈自然状态，现将一个质量为0.2kg的小球轻轻地挂在弹簧下端，在弹力和重力的共同作用下，小球做振幅为0.1m的简谐运动，设振动的平衡位置处为重力势能的零势面，则在整个振动过程中      （   ）

A．弹簧的弹性势能的最大值为0.4J

B．弹簧的弹性势能的最大值为0.2J

C．系统的总机械能为0.4J

D．系统的总机械能为0.2 J