听力教程4施心远unit1-3听力原文,生词和答案

听力课程4 unit 1-3 听力原文+生词+答案

Book 4 unit 1

Tactics for listening

1.A college education can be very costly in the United States.

2.Rising costs have led more and more families to borrow money to help pay for a college.

3.There are different federal loans and private loans for students.

4.Interest rates on some of these loans will go up on July 1st.

5.There are growing concerns that many students graduate with too much debt.

Listening comprehension

Dialogue

Social grouping

原文

F:Right ,you are talking about social groupings here. Could you tell us something about the ways animals form into groups?

M:Yes,many many animals are very solitary animals. The only times they get together is when they mate or when they are bringing up

their young. The majority of the animals are solitary. But a very significant group of mammals and insects ,like ants and termites,bees and wasps,are very social.And they group together because in a group it‟s much safer. You can defend yourself more easily if you are in a group. You can find males more easily if you are in a group. And you can change the world around you by working with the others if you live in a group. Solitary animals have a much more difficult time in many ways.

F:You mention lions and other carnivores earlier on. Do they group very much?

M:Yes ,most cats in fact don‟t group. Lions and to a lesser extent,cheetahs,are the only cats that group together. A group of lions is called a pride . And you might get anything up to 15 0r 20 lions in a pride . A pride of lions would have perhaps two or three males,perhaps a dozen females and then the cubs. But the real lion groups consists of females with their cubs. The males tend to stay for a few years and then they get kicked out by a group of younger males that come in and take over.

F:And how about the apes?

M:Well,now you are talking about the group of animals that we belong to. Apes ,some apes,live in very very big and complicated social groups. Not all,orangutans,for example ,big apes that live in

Indonesia and Malaysia ,they are very solitary and one adult may meet another adult only once every two or three years when a male and a female mate. And then the only relationship will be between a mother and her baby. The baby will stay with the mother for two or three years,four years ,five years even,learning from the mother,learning what sorts of food to eat,what the signs of danger are ,and then when the baby grows up,off it will go and live its own solitary life . The reasons why orangutans are solitary is because there is not very much food in the forest and if there was a big group of orangutans,all the food would just run out. But leaving in Asia and going to Africa,then you will find a very social apes. Now ,gorillas for example,gorillas live in uni-male groups,they used to be called harems. But the technical term is uni-male ,because there is one male within a group. One male ,and then around him will be anything up to 6,7,8,9 females,plus all the babies. And that one male in a group is the silver-back gorilla and he is much bigger and stronger than the others. He has got silvery fur on his back. And the others won‟t challenge him and he will lead the group slowly through the forest,settling down every night and moving on the next day ,finding food. So that‟s a uni-male group. But if you move a little bit further west into west Africa,you will start to come across chimpanzees,now they are a bit smaller than gorillas,they spend a