每日英语听力

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NarratorListen to part of a lecture in a biology class.

ProfessorFor todays discussion, well review the case study on how some animals have behaviorally adapted to their environments.

Now you had to read about two animal species, the Eastern marmot and the Olympic marmot.

Marmots are rodents. They are large ground squirrels, about the size of an average house cat. And they live in a variety of habitats.

And even though they spend the significant portion of the year hibernating, according to this case study, marmots are still considered excellent subjects for animal behavioral studies. Why is that?

StudentWell, when they are not hibernating, you can find them in open areas. And they are pretty active during the day, which makes them easy to observe, right?

ProfessorUh-ha, so first lets discuss the Eastern marmots.

They reside throughout the eastern region of North America where there is a temperate climate, where the growing season lasts for at least five months of the year, which is when they do all their mating, playing and eating.

StudentOh, I see. At first I wasnt sure what growing season meant, just from the reading. But now I get it. It's the amount of time it takes for them to grow, right? So it would be five months?

ProfessorUmm? Oh, uhIm sorry but no. It has nothing to do with that. It's not about the time it takes for Eastern marmots to grow.

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