猜想一：可能是通电后导线产生的热量使空气对流引起。

猜想二：可能是通电后导线周围产生的磁场引起。

根据汉语提示填入恰当的单词完成句子

①Yang Mi is one of the most popular ____(女演员) in China.

② In our school, the fourth lesson in the morning ____(结束) at 11:30.

③ ____(如果) it's sunny tomorrow, we'll go fishing.

④ Can you ____(展示) me your new photos?

⑤ They think the ____(魔术的) show is very interesting.

⑥ He ____(描述) the changes of his home town in his book.

⑦ Do you think they are ____(普通的) people?

⑧ In the old ____(社会), many poor children couldn't go to school.

⑨ How many ____(小说) does he write every year?

⑩My friend Tony says the second ____(幕) of the play is his favourite.