英语听力入门答案
【篇一：英语听力入门3000unit2答案】
environment
contents:
warming up
news report
city recycling
goals:
to train students to recognize key words and phrases in listening
to develop students’ ability to identify significant information through listening to activate students’ knowledge about environment
to cultivate students’ ability of summarizing
teaching methods:
students’ listening; group discussion; teacher’s instruction
duration:
90 minutes
  i.
a. warming up
blaze (n.  v) [c] (a) bright flame or fire 火焰; 火光: dry wood makes a good blaze. 乾木燃起夺目的火焰. (b) very large (often dangerous) fire 大火; 火灾: five people died in the blaze. 有五人死於火灾. brazil ---- rio de janeiro（ former capital of brazil）
set aside the new city, brasilia, replaced rio de janeiro as the capital of brazil in 1960.
desertification is the process by which a piece of land becomes dry, empty, and unsuitable for growing trees or crops on. (土壤)荒漠化, 沙漠化
----- a third of africa is under threat of desertification.
everglade  n. marshland, swamp
------- wetlands region in southern florida大沼泽地
greenland
n. self-governing island belonging to denmark located between iceland and the northeastern coastal islands of north america (largest island in the world)
  listen to some sentences about environment and supply the missing information. check the answers after students’ discussion.
1. new research on the likely  suggests that  than previously thought.
2. more than  for the
3. crews are working to clean up miles south of san diego.----- a port city in california (usa)
4.  in the  everglades have been  after a nearly of
blazes that consumed 65,000 hectares in the southern part of the states.
5. a. us space agency study finds that . the
loss to the world’s second largest ice sheet---more than  by 0.13 millimeters.
b.  aerial offensive
reptile
‘salamander火蜥蜴
alligator短吻鳄
amphibian: 两栖动物
poppy:
herbicide: substance used to destroy weeds
directory: list of telephone subscribers, business firms, etc.
xeric adj. of a dry environment, suited for a dry environment
xeriscaping -----a landscaping method that employs drought-resistant plants in an effort to conserve resources, especially water.旱生园艺; 节水型花园----通过选择需水少的植物，进行环境美化
sawgrass ----a tall coastal or marshy sedge of eastern north america, mexico, and the west indies, having leaves with sharp, minutely toothed margins.
锯齿草:一种产于北美东部、西哥和西印度岛高海岸或沼生的蓑衣草,叶片具有尖利的小齿边缘.
锯草球场 ----golf course
  preliminary listening. listen to the items and summarize each of them.
listen to the news items again. focus your attention on the “wh-“ questions and try to answer them.
discussion after the first listening.
1. what? 2. what? 3． what? 4. what? 5. what?
  news items:
1. australia is the world’s driest continent. there’s general agreement that the country  has to use water more efficiently. in many parts, supplies are in crisis. at a meeting in canberra, the council of australian governments has approved a national water plan. it attempts to balance environmental concerns and the needs of the community. the amount of water taken from rivers for commercial use is to be cut and farmers will be compensated.
2. the disappearance and deformity of amphibians such as frogs and salamanders from rain forests and mountain lakes worldwide has attracted wide-spread scientific attention over the last decade. now a new study says reptile species including turtles, snakes, and alligators are in even greater trouble. twice as many reptiles as amphibians, or some 100 species, are currently listed as endangered by the world conservation union. the study says habitat loss and degradation, pollution, disease, climate change, and over-collection for food, pets and drugs are the major threats to
reptiles.
3. four regional governors from columbia, on a visit to washington, have sharply criticized an american-backed aerial offensive to eradicate thousands of hectares of illegal coca and poppy plantations. at a news conference the governors called for a different approach in the fight against the illegal drugs trade, saying that the herbicides currently being used were harmful to public health and the environment.
4. much attention has been devoted to threatened animal species. but what about pla
nts which are the fundamental bases of life? one in every eight species of plants is threatened with extinction. since all food chains begin in the sphere of plant life, this is bad news for the animals too, including humans who depend on plants not only for food but also for medicines, building materials, and other vital purposes.

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