蜥蜴、蛇等爬行动物的体表有角质鳞片，这些结构不仅保护了身体，还能够[ ]

A．保持体温                    

B．呼吸  

C．自由运动                    

D．减少体内水分蒸发

假如你是李华，最近对你校的高三学生的体育活动现状进行了调查。请根据下列图示，用英语写一篇报告，并简要陈述你的观点。

注意：    1．词数：100字左右

2．文章的开头已给出，不计入总词数。

3．生词提示：设施facility

Recently I made a survey of Senior 3 students on physical training.

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