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聽力習題：
19.
A. Health conditions improve with time spent watching healthy programs.
B. Comedy videos can cure most people of chronic heart attacks.
C. Chances of having heart attacks reduce with those amused daily.
D. Most patients can't survive once they suffer from a second heart attack.
20.
A. Laughing is a learned behavior.
B. Laughing is a good medicine to patients.
C. Laughing is easier than battling with an illness.
C. Laughing is something people can do without effort.
21.
A. A fitness program offered to the general public.
B. A physical exercise to build up muscles.
C. A program that makes people keep laughing.
D. A situation where you have no mood to smile.
22.
A. You'd better smile or laugh from the bottom of your heart.
B. You can't fool your body by pretending to be happy.
C. A smart mind can't tell the difference between a fake one and a real one.
D. Even a fake one can benefit people physiologically just as well as a real one.
聽力原文：
W: We've all heard the saying "Laughter is the best medicine." How important is it to our health, Dr. Berk?
M: This saying has been scientifically proven! [19]A year-long study of heart attack victims done at the Oakhurst Health Research Institute in California found that of those patients who spent half an hour a day watching comedy videos, 10 percent had a second heart attack, whereas 30 percent of those who did not watch had a second attack.
W: Wow! [20]Laughter is really a good medicine to patients. Can you give us another example?
M: Sure! Norman Cousins, editor of the Saturday Review, learned this during a battle with an illness. He discovered that his condition improved when he enjoyed himself and watched funny movies.
W: You said Norman learned this? Do we have to learn to laugh?
M: Not necessarily. Since laughing is something people can do sitting down, costs no money, and requires no special exercise equipment or skill, it's the perfect workout for anyone who doesn't have the time or desire to participate in a regular [21]fitness program.
W: Oh. [21]Do you have such a program to offer to the general public?
M: [21]Yes, we do. It's called the Smile Time-Out. You take a deep breath, smile, exhale, and say "Aaah" while visualizing all your muscles and cells smiling. Then add to that a memory of a time you felt really good and laughed and laughed.
W: What about the situation in which you aren't in a mood to laugh?
M: [22]Even when you fake a smile or laugh, you get the same physiological benefits as when it's the real thing, because your mind is smart, but your body is stupid and can't tell the difference!
Questions 19 to 22 are based on the conversation you have just heard.
19. What did the year-long study of heart attack victims find?
正確答案：C
解析：從選項可以看出問題與heart attack有關，聽到相關話題時注意後面的資料反映的事實：每天看半小時喜劇的心臟病患者中只有10%再次發作，而不看的人中有30%再次發作，因此可以推斷，每天都開心的'人心臟病發作率降低，即C。A中的healthy programs太籠統，且對話中並未提及健康狀況隨著看有益於健康的節目的時間增長而改善的資訊。
20. What is Norman's example meant to prove?
正確答案：B
解析：對話中提到Laughter is really a good medicine to patients.之後，舉了Norman作為例子，故答案為B.
21. What is the so-called Smile Time-Out?
正確答案：A
解析：對話先提到fitness program，然後女士問“有沒有such a program”，男士說“有，叫做Smile Time-Out”，故選A。
22. What can we learn about smile or laugh according to Dr. Berk?
正確答案：D
解析：選項與真笑假笑有關，D是最後一句的同義表達。選項C與原文意思相悖。
