小编为了帮助更多的
TPO1托福听力Lecture4原文文本
Marmots
Professor: For today’s discussion, we’ll 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?
Student: Well, 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?
Professor: Uh-ha, so first let’s 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.
Student: Oh, I see. At first I wasn’t 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?
Professor: Umm? Oh, uh… I’m sorry but no. It has nothing to do with that. It's not about the time it takes for Eastern marmots to grow. It’s when the food is available. That is when it’s not covered in snow and there is no frost covering the grass and, umm, vegetative parts of a plant’s herbs and the flowers the marmots like to eat. So growing season refers to the availability of the food they eat, OK? So now how would you describe the Eastern marmots’ social habits?
Student: Well, they are really territorial, and loners, and just so aggressive even with other Eastern marmots. And their mating ritual is just so impersonal.
Professor: Uh-ha? Now when they emerge in the spring from hibernation, the mating process begins. For them, well, they come together to mate and then they go their separate ways. Then about six to eight weeks after birth, the offspring leave their mothers.
Student: Really? Just six weeks? Is that possible for the offspring to make it on their own so young?
Professor: Well, it’s not as if they aren’t ready for the real world because they are. Remember, they mature quickly and the weather’s nice. Also they live in open fields where there is lots of edible vegetation. So roughly six weeks after birth, Eastern marmots are just old enough to take their chances of surviving in the temperate environment. So how does this relate to their behavior?
Student: Oh, I get it. Since the climate’s not too bad, the Eastern marmots don't have to rely on each other too much and they really don't need to stay together as a family to survive either.
Professor: Uh-ha, any contrast, the Olympic marmots? What about them?
Student: Well, they live together as a family and take care of their young until they are at least two years old. They’re really friendly with each other. And what I really like is that they even have greeting ceremonies. And they are not at all aggressive and territorial like the Eastern marmots. So their social behavior is so different from Eastern marmots because of the climate where they live? That seems so bizarre.
Professor: Well, the Olympic marmots inhabit meadows high in the Olympic Mountains where the weather conditions are much harsher. So there is a lot more wind and snow. The growing season only lasts about two to three months. So in that much shorter period of time, all the Olympic marmots, male and female, eat, play, work and nurture the young together.
Because the climate is so harsh, cooperation increases the survival rate of the Olympic marmots. They keep their young at home until they are physically able to survive on their own. This could explain why the social behavior of the Olympic marmots is so unlike that of the Eastern marmots.
TPO1托福听力Lecture4题目文本
1.What is the main topic of the lecture?
a) The types of habitats marmots prefer
b) Methods of observing marmot behavior
c) Feeding habits of some marmot species
d) Differences in behavior between marmot species
2.According to the case study, why are marmots ideal for observation?
a) They do not hide from humans.
b) They reside in many regions throughout North America.
c) They are active in open areas during the day.
d) Their burrows are easy to locate.
3.Drag the appropriate description of each marmot species' behavior to the box below the marmot's name.
Click on a phrase. Then drag it to the space where it belongs. One of the phrases will not be used
Click on a phrase.Then drag it to the space where it belongs.One of the phrases will not be used.To remove an answer choice,double click on it
Olympic MarmotEastern Marmot
A. Displays aggressive tendencies
B. is family oriented
C. stays active during the winter
4.What reason does the professor give for the difference in marmot behavior patterns?
a) Type of food available
b) The size of the population
c) Interaction with other marmot species
d) Adaptations to the climate
5.Why does the professor say this?
a) To inform the student that his definition is incorrect
b) To suggest that the student did not do the reading
c) To encourage the student to try again
d) To change the topic of discussion
6.Why does the professor say this?
a) To express a similar concern
b) To encourage the student to explain what she means
c) To address the student's concern
d) To agree with the student
以上就是小编整理的精彩内容托福听力TPO1文本+题目+答案解析一文，希望可以帮助托福考生，更多精彩内容尽在，预祝托福考生取得理想成绩!