【聽力答案】

4. B 5. A 6. B

【聽力原文】

Passage 2

According to researchers at University College London, human beings are naturally optimistic creatures.

It is ail in the brain，they say.（4）A study suggests it is very efficient at processing good news:（研究發現，人類的大腦在處理好消息時效率很高。)about 80% of people have a tendency to see the glass as half-full, not half-empty, even if they don't consider themselves to be optimists.（5）The good news is that this brings a health benefit. Being upbeat and having a positive outlook on life reduces anxiety.（擁有積極的人生觀可以幫助人們減少焦慮，從而對身體健康有好處。）（6）study of nearly! 100,000 women showed a lower risk of death from heart disease amongst optimists.（一項針對10萬女性的研究發現，樂觀主義者死于心臟病的風險較低。）

But there are pitfalls to always having an upbeat attitude. The authors of the study point out the 2008 financial crisis may have been caused by analysts overestimating their assets，performance even in the face of clear evidence to the contrary.

There are personal health risks, too. Dr. Tali Sharot, lead researcher, said, "‘ Smoking Kills’messages don't work as people think their chances of cancer are low. There's a very fundamental bias in the brain."

But, as they say, very cloud has a silver lining. Even if seeing the world through rose-tinted glasses poses a risk to our health, it's not something that is likely to cause us to lose sleep.

Let's just keep our chins up and keep smiling!

【核心詞匯】

analyst n.分析者；化驗員

asset n.資產,財產；優點,長處

optimistic a.樂觀的

Pitfall n.缺陷；陷阱，圈套

rose-tinted a.樂觀的；玫瑰色的

tendency n.傾向；趨勢

upbeat a.令人樂觀的；歡快的 n.復蘇；上升；興旺

keep one's chin up 不氣餒，不灰心

to the contrary 相反的

Every cloud has a silver lining. 黑暗中總有一線光明