大学英语听力教程第三册答案主编张民伦第二单元

Unit 2

Part I Getting ready

A.

B. Keys:

1: International Union for the Conservation of Nature,

United Nations, wildlife, policies

2: Convention on International Trade in Endangered Species,

trade, animals and plants, 1975, prohibits, 8000, controls,

30000

3: United Nations Environmental Program,

leadership, environment, quality of life

4: World Wide Fund for Nature(formerly World Wildlife Fund) ,

1961, Sahara Desert, North America & most of Europe,

top soil blowing away

C. Keys:

1: 2 2: 4 3: 5 4: 1,6 5: 3

Questions:

1: They work to conserve natural areas that contain endangered wildlife

2: They are campaigning to provide sea sanctuaries for some of these endangered species.Protected-nesting sites for turtles have been set up

3: It refers to the places of safety in the sea where sea animals are protected and allowed to live freely

Part II Christmas bird counts

A. Keys:

1: Jan. 3rd 2: more than 40 000 volunteers 3: 1 600 4: a 15 mile diameter

5: an American artist 6: their natural habitats 7: the late 1800s

B. Keys:

1: start 2: sponsored 3: outside counting birds 4: experienced bird watchers

5: anyone that is interested or concerned 6: scheduled 7: 10 people taking part

8: 15 mile diameter circle 9: the total bird populations 10: the number of birds

11: the longest-running bird census 12: undefined

Part III Dolphin captivity

A.

B. Keys:

1: 1 2: 3 3: 4 4: 5 5: 2

6: Dolphins should be kept in captivity.

7: There are educational benefits of keeping marine mammals in captivity.

C. Keys:

1: stress (family-oriented) 2: sonar bouncing off

3: average age of death; life getting better for captive dolphins

4: natural behabior patterns-altered

5: suffering from fractured skulls, ribs or jaws

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