根据短文内容，在下面方框内的短文空白处填入适当的单词。

     I'm Rick. I think Beijing Opera is very interesting. I often go to see it. My friend Jerry usually goes

to see Chinese action movies on weekends. But I stay at home and look at pictures of Beijing Opera.

I also read sad funny or exciting stories. I 1ike Chinese action movies, too. In a word, I love China.

     I'm Jerry. Rick is my l. ______. He likes Beijing Opera. He thinks it's 2. ______ But I usually go

to see 3. ______ action movies on 4. ______ We are different. Rick 5. ______ at home and 6.      _

at pictures of Beijing Opera. He also 7. ______ sad, funny or exciting 8. ______ He 9. ______Chinese

action movies too.  In a word, we 10. ______ China.

引起电弧偏吹的因素是什么？