文章大意：这是一篇说明文。一项研究表明，乐观主义者比那些长着一张脸的人更有可能活得更长。该理论认为，乐观主义者可能会发现更容易控制自己的情绪。以下是一些人对如何保持积极的看法。
9 . 根据提示用本部分所学词汇的正确形式完成下列短文（每空一词）
Are you a “glass-half-empty” or a “glass-half-full” type of person? A study showed that optimists (乐观主义者) are more likely to live longer than those who have a(n) 1 (愁眉苦脸) in life. The theory goes that optimists may find it easier to control their emotions. Here are some people’s opinions about how to stay positive.
Vicki Siska has been through some stressful times but has managed to remain optimistic. “Music 2 (使我高兴起来), a sense of humour keeps me seeing the bright side of things, and I have good friends who love and care for me,” she said.
Humour also helped Pippa Kennedy stay positive. She watched a TV show named Dad’s Army to help her get through a bad 3 (心情). “I also think being grateful for what you have and lots of chocolate help,” she added.
Sue Oakley Dunn says she remains positive and healthy because she does “what makes my soul sing”. She has plenty of hobbies to do for 4 (娱乐). “It works for me,” says Sue.
As well as the benefits of friendship and laughter, Robyn Black, who does yoga and has better access to 5 (医疗保健), recommends that staying fit and healthy is quite 6 (必不可少的).
