Children, 35 , can see the funny side of things more often and may laugh up to 400 times a day.
答案：(D) on the other hand
前面講成人笑的時間減少，這句話轉折談小孩「另一方面」比較常笑，on the other hand 符合這個對比轉折；as a result（因此，因果不合）、in addition（此外，累加不合）、by chance（偶然）都不符合。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個選項都是轉承語，中文是「因此、此外、偶然地、另一方面」，而前一句剛講完數據，接著又給一個數據，很容易覺得是在補充，於是挑了 in addition。這一格要看的是前後兩組數據講的是不是同一群人。
四個選項都是轉承語，可見這一格考的是前後兩句的關係。前一句講的是整體：1930 年每天笑十九分鐘，到 1980 年只剩六分鐘——重點是「愈笑愈少」。本句講的是 Children ___ can see the funny side of things more often and may laugh up to 400 times a day（小孩……比較常看到事情有趣的一面，一天可能笑上四百次）。一邊是大人愈笑愈少、一邊是小孩笑得很多，講的是兩群不同的人、兩個相反的情況——這是把另一面提出來並排比較，用 on the other hand（另一方面）。
in addition（此外）：累加同一個方向的內容，但小孩笑四百次不是在補強「人們愈笑愈少」，而是反過來的。as a result（因此、結果）：表因果，但大人笑得少並不會導致小孩笑得多。by chance（偶然地）：講的是事情碰巧發生，與整段的對比無關。
on the other hand（另一方面）、on the one hand … on the other hand …（一方面……另一方面……）、in addition（此外）、as a result（因此）、see the funny side of（看到……有趣的一面）、up to（多達）。
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.