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：(B) as much
【句型】as much…as（和…一樣多） 比較句型，表示「效果跟騎十分鐘健身腳踏車一樣好」（good在這裡當名詞用，表達「好處/效益」的量）；as many 修飾可數名詞不合，so many／so much 不是 as...as 的字詞搭配形式。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個選項兩兩成對（as many／as much、so many／so much），很容易在可數與不可數之間打轉，卻忘了先看句子裡有沒有那個決定性的 as。
先看整句的結構：which achieves ___ good as ten minutes on an exercise bike（這達到的效果……騎十分鐘健身腳踏車）。句子後半有一個 as，所以這是 as ... as 的比較結構，so many 與 so much 先出局——so ... as 只用在否定句裡（not so good as），肯定句一律用 as ... as。剩下 as many 與 as much，這時看它們修飾的是什麼：空格後面是 good。good 在這裡不是形容詞而是名詞，意思是「好處、益處」，是不可數的，所以用 as much（as much good as ...：跟……一樣多的好處）。整句是說：笑帶來的好處，跟騎十分鐘健身腳踏車一樣多。這一組可數與不可數的判準，與 88 年第 24 題完全相同——那一題是 fewer enemies（可數用 fewer）、本題是 as much good（不可數用 much）。先看後面那個名詞可不可數，再決定用哪一個字。
as many：修飾可數名詞的複數（as many books as），而 good 在這裡是不可數名詞。so many、so much：肯定句的比較用 as ... as，不用 so ... as。
as much … as（和……一樣多，接不可數）、as many … as（和……一樣多，接可數）、do sb good（對某人有好處）、for the good of（為了……的利益）、an exercise bike（健身腳踏車）、achieve（達到）。
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.