国际交流英语视听说第4册

1、,Unit,2,Protecting Our Planet,Book 4,Example Answers The biggest threat to big cats is probably hunting. People want their skins, or in some cases, they might think the big cats are a threat to people or to domestic animals. Habitat loss could be another factor that is endangering big cats.,1. Lions

2、 and other types of big cats are dying at a rapid rate. What do you think is the biggest threat to these animals?,Protecting Our Planet,Example Answers If a plant species becomes extinct, then any insect species or animal that depends on it could go without food and shelter. In addition, plants are

3、important to the soil and the air, so losing a plant species could have several negative effects on the environment.,2. If a plant species becomes extinct, what effect does this have on the environment?,Protecting Our Planet,Example Answers Tropical palms have the greatest percentage of species in d

4、anger, while lobsters, on the other hand, have the smallest percentage and number of species in danger. Therefore, tropical palms are the most threatened and lobsters are the least threatened.,Which group is the most threatened? Which is the least?,Protecting Our Planet,Example Answers All of the ca

5、tegories of species are common in China except for tropical palms, which can be only seen in several provinces. Coral reefs used to be common in the oceans around China, but a majority of the reefs have been destroyed due to over-fishing and pollution.,2. Which categories of species are common in Ch

6、ina?,Protecting Our Planet,Analytical Listening,Unit 2 Protecting Our Planet,Listening 1,Example Answers,1. The dusky seaside sparrow is now extinct. What kind of habitat do you think this bird lived in?,The bird is sitting on a branch, so it must have lived in places with trees. Southern Florida is

7、 also a warm place with a lot of wetlands.,Listening 1,Example Answers,2. What do you think are some possible causes for its extinction?,The bird may have become extinct because of habitat loss, environmental pollution, or disease. (Its a small bird, so people wouldnt want to hunt it.),A | Note-Taki

8、ng. Listen to the guided tour and complete the notes. Be sure to use key words, abbreviations, and symbols. Notice the indentations.,A Guided Tour,Listening 1,Endangered Species Act (ESA)1973 Protects animals and their _ Ex.: _ Ongoing conflict between _ and _ Ex.: _ ESA protects _; ranchers feel la

9、w violates _,habitats,steelhead trout in Washington state,landowners,government,gray wolf in Wyoming and Idaho,land,their rights,A | Note-Taking.,Listening 1,Endangered Species Today Situation today is _ than in 1973 1. _ species listed as _ or _ 2. Since 1973 only _ species removed from list 3. BUT

10、 only _ removed because they recovered; _ became extinct, others listed by mistake 4. _ more species may soon be added to list,worse, 1,300,endangered,threatened,39,14,9,300,A | Note-Taking.,Listening 1,Conclusion Even w/ ESA in place, _ _,not making much progress,Listening 1,B | Listening for Main

11、Ideas. Read the questions and answer choices. Then listen again and choose the correct answers. Use your notes from exercise A to help you.,1. What is the main topic of the talk? a. Why the dusky seaside sparrow became extinct. b. The difficulties of protecting both animals and their habitats. c. Re

12、asons that the Endangered Species Act isnt working.,b,Listening 1,B | Listening for Main Ideas. Read the questions and answer choices. Then listen again and choose the correct answers. Use your notes from exercise A to help you.,2. What does the Endangered Species Act protect? a. Endangered animals

13、and their habitats. b. Endangered animals but not their habitats. c. Animal habitats but not endangered animals.,a,Listening 1,B | Listening for Main Ideas. Read the questions and answer choices. Then listen again and choose the correct answers. Use your notes from exercise A to help you.,3. What ha

14、s happened since the passage of the Endangered Species Act? a. The number of species that are endangered has greatly decreased. b. The number of species that are endangered has increased a lot. c. The number of species that are endangered has not changed much.,c,Prior Knowledge. Discuss the question

15、s with a partner.,Listening 2,1. Ducks, quail, turkeys, and pheasants are popular birds to hunt. Elk and deer are popular four-legged animals to hunt. What other animals do you know that are hunted? 2. Have you ever gone hunting? If you have, did you like it? If you havent, would you like to try it?

16、 Why or why not?,Listening 2,Example Answers Depending on the place, people also hunt rabbits, squirrels, bears, moose, lions, elephants, alligators, and other animals.,1. Ducks, quail, turkeys, and pheasants are popular birds to hunt. Elk and deer are popular four-legged animals to hunt. What other

17、 animals do you know that are hunted?,Listening 2,Example Answer 1 Yes, I have. I liked it because I enjoy being outdoors, and it was exciting to look for an animal, even if I didnt kill one.,2. Have you ever gone hunting? If you have, did you like it? If you havent, would you like to try it? Why or

18、 why not?,Listening 2,Example Answer 2 Yes, I have. I didnt like it because the reality of killing and processing an animal for food was unpleasant.,2. Have you ever gone hunting? If you have, did you like it? If you havent, would you like to try it? Why or why not?,Listening 2,Example Answer 3 No,

19、I havent. I would like to go because I want to learn how to use a gun in the right way.,2. Have you ever gone hunting? If you have, did you like it? If you havent, would you like to try it? Why or why not?,Listening 2,Example Answer 4 No, I havent. I wouldnt like to go because I think killing animal

20、s is very cruel. Besides, I appreciate animals and I dont eat them.,2. Have you ever gone hunting? If you have, did you like it? If you havent, would you like to try it? Why or why not?,Listening 2,Example Answers The woman (Yumi) speaks in favor of hunting. The man (Raoul) speaks against hunting.,B

21、 | Note-Taking. Listen again. Take notes on the speakers arguments for and against hunting. Also take notes on their responses to each others arguments.,Listening 2,Listening 2,Example Answers Yumis Arguments for Hunting Hunting helps control animal pops. Hunters license fees help pay for animal con

22、servation. Raouls Arguments against Hunting Some hunters are irresponsible. Hunting is cruel and causes pain and suffering to animals. There is a lot of illegal hunting.,To be continued ,Listening 2,Example Answers (Continued) Yumis Responses to Raoul Natural predators also eat cows and sheep. Cows

23、also suffer when they are killed for food. Most hunters are law abiding and kill only what they can eat. Raouls Responses to Yumi Tourists can also pay to raise money for animal conservation.,Example Answer 1 I do think that hunting should be allowed in our area. We would need to create rules to pro

24、hibit the hunting of endangered species, and also to require hunters to only kill the animals of the right age and sex, and only at the right time of the year.,Listening 2,1. Do you think that hunting should be allowed in your area? If yes, what hunting rules would you make? If no, why not?,Listenin

25、g 2,1. Do you think that hunting should be allowed in your area? If yes, what hunting rules would you make? If no, why not?,Example Answer 2 I dont think that hunting should be allowed in our area because there is very little wildlife left, and very few wild areas where animals can live. Hunting wou

26、ld just be more pressure on the survival of animal species.,Example Answer 1 I do think the government should try to convince more young people to take up hunting because being outdoors teaches people about nature. If people love nature, they will be more willing to protect it. Hunting can also be a

27、 good activity for families to do together.,Listening 2,2. Some groups believe that teaching children and teenagers about hunting will make them responsible hunters as adults. Should the government try to convince more young people to take up hunting? Why or why not?,Listening 2,2. Some groups belie

28、ve that teaching children and teenagers about hunting will make them responsible hunters as adults. Should the government try to convince more young people to take up hunting? Why or why not?,Example Answer 2 I dont think the government should try to convince more young people to take up hunting bec

29、ause hunting is a practice that isnt a necessity in the modern world. People should eat food raised by farmers in sustainable ways. There is no need for us to disturb wild animals in habitats that are getting smaller every year.,Language Function Introducing Examples We use many expressions to intro

30、duce examples. Most of them are placed directly before the example. Ive visited many national parks, for example, Shenandoah and Yosemite. Theres a wide variety of animals therefor instance, bison ( 美洲野牛) and wolves. Alligators thrive in habitats such as the Everglades. The Everglades is home to man

31、y species of wildlife, including the Florida panther ( 黑豹) and the American alligator.,To be continued ,Language Function Introducing Examples (Continued) A few expressions may be placed after the examples, especially in casual speeches. Ive visited many national parksShenandoah and Yosemite, for ex

32、ample. Theres a wide variety of animals therebison and wolves, for instance.,B | Using a Dictionary. Some words have more than one meaning. With your partner, read these sentences from the video. Notice the underlined words and phrases. Then read the definitions. There are two definitions for each w

33、ord or phrase. Choose the definition that fits the sentence from the video. Use your dictionary to help you.,Before Viewing,1. The only chance the mugger has in the wild is here, in Sri Lanka. a. a criminal who robs others in public b. a crocodile of southern Asia,b,B | Using a Dictionary.,Before Vi

34、ewing,2. If they die out here, theyre probably gone for good. a. forever, permanently b. so that things will be better 3. The winner gets the prizehis pick of the females. a. a sharp, pointed tool b. choice 4. Muggers have been acting out this ritual for more than 100 million years. a. a procedure f

35、or a religious ceremony b. an activity or behavior that happens often,a,b,b,A | Note-Taking. Watch the first part of the video. Complete the notes with words from the box.,While Viewing,To be continued ,1. Increased _ populations less _ for animals 2. India: big problem for _ 3. Rom Whitaker wants t

36、o save the _crocodile. 4. Indian wetlands are now _ and farms.,human,habitats,crocodiles,mugger,rice fields,A | Note-Taking. Watch the first part of the video. Complete the notes with words from the box.,To be continued ,5. Madras Crocodile Bankworlds largest _ pop. of muggers 6. Cant let them gono

37、place for them in _,captive,India,While Viewing,B | Note-Taking. Some Note-Taking. Watch the next part of the video. Complete the notes with one or two words you hear.,the low lands,a few,30,Rom Whitaker,wild,While Viewing,A | Collaboration. With your partner, think of four questions you would like

38、to ask Rom Whitaker about the future of the mugger crocodiles.,After Viewing,Example Answers 1. Why dont wild muggers live in India anymore? 2. How do the muggers survive in Sri Lanka? 3. Why is the muggers survival important? 4. Is there anything people can do to help the muggers survive?,After Vie

39、wing,Example Answers 1. Q: Why dont wild muggers live in India anymore? A: The habitat is gone now. Indias population has grown, and the former crocodile habitat is now farms and rice fields. 2. Q: How do the muggers survive in Sri Lanka? A: Long ago, farmers here created lakes and ponds in the fore

40、st to irrigate their crops. The crocodiles can use those as habitat instead of natural wetlands.,After Viewing,To be continued ,Example Answers (continued) 3. Q: Why is the muggers survival important? A: Like any large, predatory animal, the mugger plays an important role in the ecosystem by prevent

41、ing the overpopulation of other animal species. 4. Q: Is there anything people can do to help the muggers survive? A: People can educate themselves about animal species such as this one. Even though theyre not cute, crocodiles are important to life on Earth.,After Viewing,A | Evaluating Arguments. R

42、ead the arguments. Are these arguments for or against keeping animals in zoos? Write F if the argument is for zoos or A if the argument is against zoos.,Participating a Debate,_ 1. Animals do not have rights, so it is acceptable for people to keep them in zoos. _ 2. Zoos educate people about how to

43、protect endangered species. _ 3. In many zoos, animals are kept in small cages and cannot move around. _ 4. It costs a lot of money to keep animals in zoos.,F,F,A,A,Participating a Debate,_ 5. It is fun to see interesting and unusual animals in zoos. _ 6. Zoos protect animals that are hunted illegal

44、ly, such as rhinos (犀牛) and elephants. _ 7. People can be educated about animals without keeping animals in zoos. _ 8. The artificial environment of a zoo is very stressful for many animals. They often stop eating.,A | Evaluating Arguments. Read the arguments. Are these arguments for or against keep

45、ing animals in zoos? Write F if the argument is for zoos or A if the argument is against zoos.,F,F,A,A,A | Read the statements. Then listen to a conversation about saving the whales and check () T for true or F for false.,Listening 1,1. Most species of the baleen whales are now endangered. 2. A numb

46、er of countries continue with commercial whaling simply because there is no policy against it. 3. California gray whales are now extinct. 4. According to the conversation, we can help by donating money to the conservation organizations.,T F ,Listening 1,Answer Keys 1. T 2. F (They have chosen to vio

47、late the rule and continue to kill whales.) 3. F (Gray whales were removed from the Endangered Species List.) 4. F (We can help by learning about whales and their habitats, donating our time to conservation organizations, and altering our behavior to create as little waste as possible.),B | Read the questions. Then listen again and complete the sentences with what you hear.,Listening 1,1. The endangered status of whales is the result of _ in the 19th and 20th centuries, when whales were exploited for _. 2. Today, threats to whales include _, _ and _. 3. Whale p