四六级考试

【单选题】
A、Both dolphins were put in the same tank.
B、The male dolphin received more rewards.
C、The lever was beyond the dolphins’ reach.
D、Only one dolphin was able to see the light.
网考网参考答案：D
网考网解析：
[听力原文] How did the second stage of the experiment differ from the first stage [解析] 细节题。在实验的第二个阶段，两只海豚被分别放置于不同的容器中，而灯和控制杆的位置几乎不变动，而且只有雌海豚可以看到灯的状态来决定需要先按哪个控制杆。即实验第二阶段和第一阶段的不同之处就在于只有一个海豚能够看到灯光。故选D。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>