By exhaling air from the lungs in short 36 of laughter, breathing is quickened and heartbeats increased, which achieves 37 good as ten minutes on an exercise bike.
答案：(A) bursts
【句型】bursts of laughter 字詞搭配「陣陣笑聲」；breaks／circles／pieces 都不如 bursts 自然搭配laughter。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個選項都是名詞，中文是「爆發、斷裂、圓圈、碎片」，如果沒把 bursts of laughter 當一組記過，就只能憑感覺挑。
四個選項都是名詞，可見這一格考的是與 laughter 的搭配。空格所在的地方是 in short ___ of laughter（以短促的……笑聲），描述的是笑聲一陣一陣、斷斷續續地出來。英文講這種「一陣一陣的」用的是 burst——a burst of laughter（一陣笑聲）是固定的組合，同一組還有 a burst of applause（一陣掌聲）、a burst of anger（一陣怒火）、a burst of energy（一股突然的精力）。共同的意思是「突然而短暫地爆發出來的一陣」，用來配笑聲正好。
breaks（斷裂、休息）：a break 是中斷或休息，與「一陣一陣爆發」的意思相反。circles（圓圈）：與笑聲無關。pieces（碎片）：a piece of 用來數不可數的東西（a piece of advice 一則建議），但沒有 pieces of laughter 這種說法。
a burst of laughter（一陣笑聲）、a burst of applause（一陣掌聲）、a burst of anger（一陣怒火）、exhale air（吐氣）、from the lungs（從肺部）、heartbeats increase（心跳加快）。
Perhaps most of us are familiar with the saying "Laugh and the world 31 with you, weep and you weep alone."32 did you know that according to recent research, people are losing the art of laughter and it could have a 33 effect on our health? In 1930 we laughed on average for 19 minutes each day, but by 1980 it 34 to six minutes. Children, 35 , can see the funny side of things more often and may laugh up to 400 times a day.
By exhaling air from the lungs in short 36 of laughter, breathing is quickened and heartbeats increased, which achieves 37 good as ten minutes on an exercise bike. Laughter, too, has a beneficial effect on our immune system, 38 the production of white blood cells and increasing our resistance to infection.39 makes a difference to our appearance, too, when we relax our facial muscles!
Laughter 40 is the best medicine, so why not give yourself a treat? Have a good laugh today--and feel better for it.