My mother is a kind and nice woman. ____ One Sunday night, when I was watching the film Harry Potter very happily. Mother asked me to go to bed. ____ that I didn't move. But for a while, I noticed that she didn't say anything. ____ I was so sad that I went into my room and cried. I thought "I have only two nights in a week to enjoy the TV. ____" The next day she cooked and talked with me as usual. I pretended not to hear, but she didn't mind and told me why she didn't allow me to watch TV ____ Then I understood her. I love my mother.

（判断题 ）
汉字书法为汉族独创的表现艺术，被誉为“无言的诗”、“无行的舞”。我国古代，书法名家辈出。唐代的柳公权，被称为继王羲之之后我国书法史上最有成就的大书法家。

物体在共点力作用下，下列说法中正确的是(　　)