题目

根据短文内容，请将单词填写在题号对应的横线上。 I seldom thought I had a passion. I would sit before the TV all day, thinking about nothing but the next show. It was not long ago that I first learned how important (have) a passion is to life. One day I went with Mum (drop) my sister off at the gym. Then, as Mum stopped at a red light, someone on the roadside caught my eyes. It was a man (dress) in rags, homeless. That didn't interest me, for I (see) many like him before. But the man wasn't sitting down with a sad (express). He had a radio in his hand and was dancing 5．如图所示，科技小组的同学用长方体泡沫塑料A、三脚架和灯泡等制作了一个总重为4N的航标灯模型． A底部与浮子B用细绳相连．水位上升时，浮子B下降；水位下降时，浮子B上升．如果航标灯静止时泡沫塑料A浸入水中的体积始终为500cm3，浮子B重0.5N，不计绳重和绳与滑轮间的摩擦，浮子B的体积为1.5×10-4m3．（g=10N/kg）