TPO60综合口语Task3阅读原文+听力原文+MP3+范文

TPO60综合口语Task3阅读原文+听力原文+MP3+范文

TPO60综合口语Task3阅读原文：

Deceptive Caching

When food is plentiful, animals often collect and hide extra food to eat when it is scarce. However, other animals may try to steal this stored food: and eat it themselves. To protect their food supply, some animals engage in deceptive caching. Using this technique: animals deceive other animals into thinking that food is hidden in one place： while it is actually hidden somewhere else. Deceptive caching tricks animals that try to steal food, making it harder for them to find the food supply. If their attempts at stealing food are repeatedly unsuccessful, the animals often become discouraged and stop trying to steal hidden food.

TPO60综合口语Task3听力原文：

Now listen to part of a lecture in a biology class.

Professor:

Okay. So there’s a good example of this. Recently a team of researchers was observing a certain type of squirrel, Eastern Grey Squirrels, gathering nuts for the winter. And of course, grey squirrels try to gather enough nuts so that they’ll have food to eat all winter long. And they dig holes in the ground and bury the acorns there.

But here’s what’s interesting: the grey squirrels don’t always put nuts in all of the holes they dig. If there’s another animal nearby that might want to eat the nuts, say, a bird, like a blue jay, the squirrel might dig a whole bunch of holes, but instead of putting nuts in all of them, the squirrel would just drop a twig or a stone in most of the holes, and only put nuts in a few.

。。。。此处省略500字！

TPO60综合口语Task3题目：

Explain how the example of the eastern grey squirrel illustrates the concept of deceptive caching

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