2012年6月大學英語六級考試真題及答案解析（3）

　　Conversation 1

　　W: One of the most interesting experiments with dolphins must be one done by Doctor Jarvis Bastian. What he tried to do was to teach a male dolphin called Bass and a female called Doris to communicate with each other across a solid barrier.

　　M: So how did he do it exactly?

　　W: Well, first of all, he kept the two dolphins together in the same tank and taught them to press levers whenever they saw a light. The levers were fitted to the side of the tank next to each other. If the light flashed on and off several times, the dolphins were supposed to press the left-hand lever followed by the right-hand one. If the light was kept steady, the dolphins were supposed to press the levers in reverse order. Whenever they responded correctly, they were rewarded with fish.

　　M: Sounds terribly complicated.

　　W: Well, that was the first stage. In the second stage, Doctor Bastian separated the dolphins into two tanks. They could still hear one another, but they couldn’t actually see each other. The levers and light were set up in exactly the same way except that this time it was only Doris who could see the light indicating which lever to press first. But in order to get their fish, both dolphins had to press the levers in the correct order. This meant of course that Doris had to tell Bass whether it was a flashing light or whether it was a steady light. M: So did it work?

　　W: Well, amazingly enough, the dolphins achieved a 100 % success rate.

　　Questions 19-21 are based on the conversation you have just heard.

　　Q19. What is the purpose of Doctor Jarvis Bastian’s experiment?

　　Q20. What were the dolphins supposed to do when they saw a steady light?

　　Q21. How did the second stage of the experiment differ from the first stage?

　　答案：

　　19. D) to see if dolphins can communicate with each other.

　　20. A) Press the right-hand lever first.

　　21. C) Only one dolphin was able to see the light.

　　【解析】

　　這篇長對話主要圍繞巴斯蒂安博士關于海豚的實驗而展開，實驗的目的是要教會海豚學會互相溝通和交流訊息。隨著男士對實驗的發問，女士便對實驗的兩個階段進行了詳細介紹。這篇長對話整體難度適中，考生只要在平時注意練習和打好詞匯基礎，想要得滿分并不難。需要提醒考生的是，做聽力題也要講究技巧，一定要帶著問題去有目的地聽，相關的信息著重記憶，不相干的信息迅速忽略。懂得抓題眼和懂得取舍，這樣聽力才能做得好。

　　重點詞匯和表達：

　　lever n.杠(桿);途徑，工具

　　in reverse order以相反的順序

　　be rewarded with得到獎勵

　　flashing light閃光燈

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