实验室用高锰酸钾制氧气，有如下操作步骤：①加热②连接装置，并检查装置的气密性③装

请先阅读下面短文，掌握其大意，然后从方框所给的词中选出最恰当的10个，用其适当形式填空。

on, listen, others, hear, of, ask, answer, activity, another, small, learn, we

Many people like to watch TV. Watching TV is one of the most important小题1: _____________of the day. TV brings the outside world closer to people’s homes. Some people say the world is 小题2:____________than before because of TV.
What’s going on in 小题3:__________ countries? How do people live in places far away? Is there a good sports game somewhere? What’s living in the deepest（最深的）part 小题4:___________the sea?
If you want 小题5:__________ these and other kinds of questions, just turn 小题6:  _______ the TV. You can see a lot and learn a lot. Of course, people can also learn through reading or 小题7:__________ to the radio. But with TV they can learn better and more easily. Why? Because they can小题8:______________ and watch, too.
TV helps to open our eyes. TV also helps us to open our minds. TV often gives 小题9:_____________ new ideas. We learn newer and better ways of doing something that can be 小题10:_____________on TV.