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[originaltext]W: One of the most interesting experiments with dolphins must be
[originaltext]W: One of the most interesting experiments with dolphins must be
游客
2024-04-12
17
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问题
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.
1. What is the purpose of Doctor Jarvis Bastion’s experiment?
2. What were the dolphins supposed to do when they saw a steady light?
3. How did the second stage of the experiment differ from the first stage?
4. What should the dolphins do to get rewarded?
选项
A、Only one dolphin was able to see the light.
B、The male dolphin received more rewards.
C、The lever was beyond the dolphins’ reach.
D、Both dolphins were put in the same tank.
答案
A
解析
女士说在实验的第二阶段,杠杆和灯的设置与前一阶段基本一样。不同之处在于这次只有名叫Doris的海豚能看见灯光。所以答案为A。B中的more rewards对话中没有提到;对话说两只海豚都能正确按下杠杆,可见不会够不着,C错;在第二阶段的实验两只海豚不在同一个水箱。D错。
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