小虎鯊一出生就在大海里，很習(xí)慣大海中的生存之道。肚子餓了，小虎鯊就努力找大海中的其他魚類吃，雖然要費(fèi)力氣，卻也不覺得困難。

有時候，小虎鯊必須追逐良久，才能獵食到口。這種困難度，隨著小虎鯊經(jīng)驗(yàn)的長進(jìn)，越來越不是問題，獵食的挫折并不對小虎鯊造成困惑。

很不幸，小虎鯊在一次悠游追逐時，被人類捕捉到。離開大海的小虎鯊還算幸運(yùn)，一個研究虎鯊的單位把它買了去。關(guān)在人工魚池中的小虎鯊，雖然不自由，卻不愁獵食。研究人員會定時把食物送到池中，都是些大大小小魚食。有一天，研究人員將一大片玻璃放到池中，把水池隔成兩半，小虎鯊看不出來。

這一天，研究人員把活魚放到玻璃的另一邊，小虎鯊等研究人將放下魚之后，就沖了過去，撞到玻璃，痛得頭眼昏花，什么也沒吃到。

小虎鯊不信邪，等了幾分鐘，看準(zhǔn)了一條魚，咻！又沖過去，撞得更痛，差點(diǎn)沒昏倒，一樣吃不到。

休息十分鐘之后，小虎鯊餓壞了，這次看得更準(zhǔn)，盯住一條更大的魚，咻！又沖過去，情況沒改變，小虎鯊撞得嘴角流血。想不通到底是怎么回事？小虎鯊

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