题目

As an outstanding humorous    61   (act), Chaplin could always inspire in the audience deep feelings by    62   (use) particular forms of acting in the time of silent films. His charming character the Little Tramp is well known all over the world, a poor and    63   (home) person, wearing large trousers, worn-out shoes, and carrying    64    walking stick.   65    he was a social    66   (fail), he was loved by all the audience for his    67   (determine) in overcoming difficulties and being kind to people unkind to him. When playing the famous乒乓球运动在我国非常普及，在历次国际乒乓球大赛中，我国选手都能取得辉煌的战绩，因此乒乓球被誉为中国国球。图为伦敦奥运会乒乓球比赛的一个场景，请你就这项运动所涉及的现象，说出所包含的物理知识。(只写两处，所列举现象不能与给出的例子相同)例：现象：乒乓球在空中不做匀速直线运动包含的物理知识：乒乓球受到非平衡力现象包含的物理知识