國際交流英語視聽說第4冊(cè)u(píng)nit2

1、Unit 2 2Protecting Our PlanetBook 4Exploring the ThemeExample AnswersThe 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 bi

2、g cats.1. Lions 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 PlanetExploring the ThemeExample AnswersIf a plant species becomes extinct, then any insect species or animal that depends on it could go without food and sh

3、elter. In addition, plants are 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 PlanetExploring the ThemeExample Answers Tropical pal

4、ms have the greatest percentage of species in danger, 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.1. Which group is the most threatened? Which is the least?Pro

5、tecting Our PlanetExploring the ThemeExample AnswersAll of the categories 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-fishi

6、ng and pollution.2. Which categories of species are common in China?Protecting Our PlanetAnalytical ListeningUnit 2 Protecting Our PlanetAnalytical ListeningListening 1 Example Answers1. The dusky seaside sparrow is now extinct. What kind of habitat do you think this bird lived in?The bird is sittin

7、g on a branch, so it must have lived in places with trees. Southern Florida is also a warm place with a lot of wetlands.Analytical ListeningListening 1 Example Answers2. What do you think are some possible causes for its extinction?The bird may have become extinct because of habitat loss, environmen

8、tal pollution, or disease. (Its a small bird, so people wouldnt want to hunt it.)Analytical ListeningA | Note-Taking. Listen to the guided tour and complete the notes. Be sure to use key words, abbreviations, and symbols. Notice the indentations. A Guided TourListening 1 Endangered Species Act (ESA)

9、1973Protects animals and their _ Ex.: _Ongoing conflict between _ and _ Ex.: _ESA protects _; ranchers feellaw violates _habitatssteelhead trout in Washington statelandownersgovernmentgray wolf in Wyoming and Idaholandtheir rightsAnalytical ListeningA | Note-Taking. Listening 1 Endangered Species To

10、daySituation today is _ than in 19731. _ species listed as _ or _2. Since 1973 only _ species removed from list3. BUT only _ removed because they recovered; _ became extinct, others listed by mistake4. _ more species may soon be added to listworse 1,300endangeredthreatened39149300Analytical Listenin

11、gA | Note-Taking. Listening 1 ConclusionEven w/ ESA in place, _ not making much progressAnalytical ListeningListening 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.1. What is the mai

12、n topic of the talk? a. Why the dusky seaside sparrow became extinct.b. The difficulties of protecting both animals and their habitats.c. Reasons that the Endangered Species Act isnt working.bAnalytical ListeningListening 1 B | Listening for Main Ideas. Read the questions and answer choices. Then li

13、sten 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 and their habitats.b. Endangered animals but not their habitats.c. Animal habitats but not endangered animals.aAnalytical ListeningListening 1 B

14、 | 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 has happened since the passage of the Endangered Species Act?a. The number of species that are endangered has greatly decreased.b.

15、The number of species that are endangered has increased a lot.c. The number of species that are endangered has not changed much.cAnalytical ListeningPrior Knowledge. Discuss the questions with a partner.Listening 2 1. Ducks, quail, turkeys, and pheasants are popular birds to hunt. Elk and deer are p

16、opular 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? Why or why not?Analytical ListeningListening 2 Example AnswersDepending on the place, people also hunt rabbits, squ

17、irrels, 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 animals do you know that are hunted?Analytical ListeningListening 2 Example Answer 1Yes, I have. I

18、 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 why not?Analytical ListeningListening 2 Example Answer 2Yes, I have. I didnt lik

19、e 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?Analytical ListeningListening 2 Example Answer 3No, I havent. I would like to go because I want t

20、o 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?Analytical ListeningListening 2 Example Answer 4No, I havent. I wouldnt like to go because I think killing animals is very cruel. Besides, I

21、 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?Analytical ListeningListening 2 Example AnswersThe woman (Yumi) speaks in favor of hunting.The man (Raoul) speaks against hunting.Analytical Li

22、steningB | 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 Analytical ListeningListening 2 Example AnswersYumis Arguments for Hunting Hunting helps control animal pops. Hunters license fe

23、es help pay for animal conservation.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 Analytical ListeningListening 2 Example Answers (Continued)Yumis Responses to Raoul Natura

24、l predators also eat cows and sheep. Cows 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.Analytical ListeningExample Answer 1I do think that hunting should b

25、e allowed in our area. We would need to create rules to prohibit 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, w

26、hat hunting rules would you make? If no, why not?Analytical ListeningListening 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 2I dont think that hunting should be allowed in our area because there is very little

27、 wildlife left, and very few wild areas where animals can live. Hunting would just be more pressure on the survival of animal species.Analytical ListeningExample Answer 1I do think the government should try to convince more young people to take up hunting because being outdoors teaches people about

28、nature. If people love nature, they will be more willing to protect it. Hunting can also be a 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 con

29、vince more young people to take up hunting? Why or why not?Analytical ListeningListening 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 no

30、t?Example Answer 2I dont think the government should try to convince more young people to take up hunting because 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

31、 that are getting smaller every year.Sharing Your IdeasLanguage Function Introducing ExamplesWe use many expressions to introduce 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 there

32、for instance, bison ( 美洲野牛) and wolves.Alligators thrive in habitats such as the Everglades.The Everglades is home to many species of wildlife, including the Florida panther ( 黑豹) and the American alligator.To be continued Sharing Your IdeasLanguage Function Introducing Examples (Continued)A few exp

33、ressions may be placed after the examples, especially in casual speeches.Ive visited many national parksShenandoah and Yosemite, for example.Theres a wide variety of animals therebison and wolves, for instance.Viewing the WorldB | Using a Dictionary. Some words have more than one meaning. With your

34、partner, read these sentences from the video. Notice the underlined words and phrases. Then read the definitions. There are two definitions for each word 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 mugg

35、er has in the wild is here, in Sri Lanka. a. a criminal who robs others in public b. a crocodile of southern AsiabViewing the WorldB | Using a Dictionary. Before Viewing 2. If they die out here, theyre probably gone for good. a. forever, permanently b. so that things will be better3. The winner gets

36、 the prizehis pick of the females. a. a sharp, pointed tool b. choice4. Muggers have been acting out this ritual for more than 100 million years. a. a procedure for a religious ceremony b. an activity or behavior that happens oftenabbViewing the WorldA | Note-Taking. Watch the first part of the vide

37、o. Complete the notes with words from the box.While Viewing To be continued 1. Increased _ populations less _ for animals2. India: big problem for _ 3. Rom Whitaker wants to save the _crocodile.4. Indian wetlands are now _ and farms. humanhabitatscrocodilesmuggerrice fieldsViewing the WorldA | Note-

38、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 muggers6. Cant let them gono place for them in _captiveIndiaWhile Viewing Viewing the WorldB | Note-Taking. Some Note-Taking. Watch the next part of

39、the video. Complete the notes with one or two words you hear. the low landsa few30Rom WhitakerwildWhile Viewing Viewing the WorldA | Collaboration. With your partner, think of four questions you would like to ask Rom Whitaker about the future of the mugger crocodiles.After Viewing Viewing the WorldE

40、xample Answers1. 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 Viewing Viewing the World Example Answers 1. Q: Why dont wild muggers live in India an

41、ymore? 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 forest to irrigate their crops. The crocodiles can use those as habit

42、at instead of natural wetlands.After Viewing To be continued Viewing the WorldExample 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 preventing the overpopulation of other animal species.4.

43、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 EngagingA | Evaluating Arguments. Read the arguments. Are these arguments for o

44、r 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 protect endangered species._ 3. In many zoos, a

45、nimals are kept in small cages and cannot move around._ 4. It costs a lot of money to keep animals in zoos.FFAAEngagingParticipating a Debate_ 5. It is fun to see interesting and unusual animals in zoos._ 6. Zoos protect animals that are hunted illegally, such as rhinos (犀牛) and elephants._ 7. Peopl

46、e 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 keeping animals in zoos? Write F if the argument is for

47、 zoos or A if the argument is against zoos.FFAAFurther ListeningA | Read the statements. Then listen to a conversation about saving the whales and check () T for true or F for false.Listening 11. Most species of the baleen whales are now endangered.2. A number of countries continue with commercial w

48、haling 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 Further ListeningListening 1Answer Keys1. T2. F (They have chosen to violate the rule and continue to ki

49、ll 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.)Further ListeningB | Read the questions. Then listen again and complete the sentences with what you hear.Listening 11. The endangered status of whales is the result of _ in the 19th and 20th centuries, when whales were exploited for _.2. Today, threat