The group saw the worm go down into the water and soon begin to struggle for 19.
答案：(D) survival
struggle for survival（為求生存而掙扎）為固定搭配，表示蟲子在酒精中開始為了活命而掙扎；health／audience／proof 均不符合 struggle for 的搭配語意。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
audience 這個字剛剛才在同一篇裡出現過（He said to the audience），眼睛掃到選項時會覺得特別眼熟，很容易直接選它。但眼熟不等於正確——刻意從文章裡取用出現過的字來當誘答選項，是常見的命題手法，看到一個「剛剛好像看過」的選項，那正是要停下來驗算的訊號，不是選它的理由。把 struggle for audience 讀一次就知道不通：蟲不會為了觀眾而掙扎。
四個選項都是名詞，文法上都放得進 for 後面，可見這一格考的不是文法而是語意，只能往上下文找。這一格落在大考中心說的「詞彙量」這一項上，問的是 struggle for 後面接的是什麼。只讀空格所在的這一句還定不了案：the worm go down into the water and soon begin to struggle（蟲沉進液體裡，隨即開始掙扎）只說了牠在掙扎，沒說牠在爭取什麼——為了浮上來、為了游出去、為了活下去，讀到這裡都還講得通。定案的依據在下一句：Right there and then every one in the group witnessed the worm shrinking and disintegrating. Then it died.（就在當下，這群人親眼看著那條蟲萎縮、崩解，然後牠死了。）結局是死亡，那麼前一句那場掙扎爭的就只會是一條命。把 survival 放回去讀一次，struggle for survival（為求生存而掙扎）語意完全接得上；這是常考的字詞搭配，兩個字要整組記起來。這一類題有一招很省力：讀到「掙扎」而句內看不出掙扎的目標是什麼時，往下讀一句看結局，結局會反過來告訴你目標。
health（健康）方向不對，蟲不是在爭取變健康，是在保命；proof（證據）是這場示範要拿給人看的東西，不是蟲自己要爭取的；audience（觀眾）如上，是眼熟造成的陷阱。三個選項雖然都是名詞，卻沒有一個能當「掙扎」的目標，也沒有一個接得上下一句的死亡結局。
struggle for survival（為求生存而掙扎）、struggle to V（努力想做某事）、see somebody 或 something ＋ 原形動詞（看到某人或某物做某事，如 I saw him leave.）、go down into（往下沉進……）、witness（目睹）、proof（證據，動詞形是 prove 證明）
A man wanted to prove to a group of alcoholics the effect of alcohol on human body systems. He displayed two jars in front of the group, one containing water and the other containing alcohol, 16 a very healthy worm. He said to the audience: "This jar contains water." Then he dropped the worm in the jar and said, "Please watch the reaction." The group watched closely 17 the worm floated in the jar, dangling and swimming.
The man then took the worm out of the first jar and put it in the second jar 18 contained alcohol and said to the audience, "Now watch the reaction." The group saw the worm go down into the water and soon begin to struggle for 19. Right there and then every one in the group witnessed the worm shrinking and disintegrating. Then it died.
The man turned round and asked the audience, "What would you all say to this?" After a long silence, someone from the rear 20 and said, "I can see that if I drink alcohol, there will be no more worms in my body."