loading实用文档
Unit 2
II. Basic Listening Practice
1. Script
M: Now we have satellite and high-powered microscopes, it’s easy to think we know everything about the world; but we still don’t understand EI Nino.
W: Right. Even the scientists are uncertain about the exact cause of the warm Pacific current that brings storms or drought—the mysterious EI Nino.
Q: Which of the following is true according to the conversation? B) Even scientists cannot understand EI Nino.
男：现在我们有卫星和高性能的显微镜，我们知道世界上的一切是很容易的；但我们仍不了解尼诺现象。
W：右。甚至科学家也不知道确切的原因温暖的太平洋洋流带来的风暴或干旱的神秘的尼诺。
问：根据对话，下列哪项是正确的？
B）连科学家们无法理解尼诺。
2. Script
M: Everyone is talking about environmental problem: acid rain, greenhouse effect, holes in the ozone layer. We should think positively. What can we do to improve things?
W: I agree. We could do a lot more to harness the sun’s energy for heating and lighting in our homes. Millions of solar roofs are now emerging in Japan, the U.S., Italy, and Germany.
Q: How do the man and the woman view the environment? D) Both the man and woman think positively about it.
M：每个人都在谈论环境问题：酸雨，温室效应，臭氧层的洞。我们应该积极地思考。我们能做什么来提高呢？
W：我同意。我们可以做更多的事来利用太阳的能量加热和在我们的家庭照明。太阳能屋顶计现在出现在日本，美国，意大利，德国。
问：如何看待环境？
d）男女积极思考它。
实用文档
3. Script
W: We lived in Beijing some years ago. It was always difficult to keep the house clean with the wind from the north blowing sand from the desert. M: That’s why the Chinese government has been encouraging people to plant trees along the edges of the Gobi Desert. Now those trees act as wind barriers.
Q: What have the Chinese people been encouraged to do? A) To grow trees.
W：我们几年前住在。它是从北方吹来的，沙子吹来保持屋子干净很困难。
男：这就是为什么中国政府一直在鼓励人们植树造林，在戈壁滩沙漠的边缘。现在那些树作为风障。
问：有什么中国人被鼓励吗？
一）种树。
4. Script
M: Many old refrigerators and cars are environmental hazards because they contain CFCs that destroy the ozone layer.
W: Yes, but government organizations are helping people to safely dispose of old refrigerators or, in the case of cars, to upgrade their air conditioning.
Q: What are government organizations helping people to do? A) To treat old electrical appliances safely.
M：许多旧冰箱和汽车的环境危害，因为它们含有氯氟烃破坏臭氧层。
女：是的，现在政府机构帮助人们安全地处置旧冰箱或，以汽车为例，来升级自己的空调。
问：政府组织帮助人们做什么？
一）处理旧电器的安全。
5. Script
M: Hey. That’s an aerosol spray you’re using on your hair! Build a bomb or set fire to the apartment to kill us quickly instead of making holes in the ozone, so we die of cancer.
W: Cool it. This spray doesn’t contain CFCs. And you’d better read a little more.
Q: What does the man mean?
C) The woman should not use an aerosol spray.
实用文档
男：嘿。这是一个喷雾你对你的头发不好！等于建立一个炸弹，或充满整个公寓快速杀死我们，不利于臭氧洞，而且我们可能死于癌症。
W：冷静。这种喷雾不含氯氟烃。你最好多读一点。
问：这个男人是什么意思？
c）女人不应该使用喷雾。
III. Listening In
Task 1: We should have proper respect for nature!
Script
Martha: Do you think most people in your culture respect nature? Ed: I think so. Um… more now than before.
Martha: What do you think is the most serious environment problem in the
world today?
Ed: Today…I think damage to the ozone layer is a big problem, and
another problem is pollution in big cities and things like that.
Martha: How do you learn about environmental problems? Ed: Um… through school. A lot of clubs promote environmental safely,
and some TV programs, too. They talk about environmental safely and stuff like that.
Martha: Do you think students should learn more about the environment
at school?
Ed: I think so. So, as they grow older, they can be more aware of
all the problems that are going on, and prevent more problems from occurring.
Martha: If you could create a new law to help the environment, what would it be?
Ed: A new law for the environment? Um…I’d probably say that when
people throw away their cigarette butts, they have to throw them into the garbage bin, not just throw them everywhere because it’s just littering and I hate that. So they should be fined if they throw them on the floor on the ground.
Martha: That’s a good idea. What do you personally do to help protect
the environment?
Ed: I’ m so against littering. I never litter. If I see somebody
litter, I get really angry. So I always throw my trash into the garbage bin.
玛莎：你认为在你的文化中人们尊重大自然？
实用文档
艾德：我是这么认为的。嗯……现在比以前更多。
玛莎：你认为什么是当今世界最严重的环境问题？
艾德：今天……我想破坏臭氧层，是一个大问题，一个问题是在大城市的污染等等。
玛莎：你怎么了解环境问题？
艾德：嗯……通过学校。很多俱乐部促进环境安全，和一些电视节目，太。他们谈论环境安全的东西。
玛莎：你认为学生应该在学校学会更多关于环境的问题吗？
艾德：我是这么认为的。所以，当他们长大后，他们可以更清楚地了解所有的问题，要，并防止更多的问题。
玛莎：如果你能创造新的法律帮助环境，它会是什么？
艾德：对环境的新法律？嗯……我可能会说，当人们扔掉的烟头，他们不得不把它们扔到垃圾桶，不随便乱扔垃圾，我憎恨这种行为。所以他们应该罚款如果他们扔在地板上。
玛莎：那是个好主意。那么个人的事怎么来帮助保护环境呢？
艾德：我非常反对乱扔垃圾。我从不乱扔垃圾。如果我看到有人乱扔垃圾，我真的生气了。所以我总是把我的垃圾扔进垃圾箱。
Key:
(1)Nature environmental problem pollution promote aware of from occurring law throw away fined trash
Task 2: River pollution
Script
If you see dead fish floating on the river or notice that the water is discolored and smelly, you know the river has been polluted, and there are four main possible causes for it.
First, fertilize. If large amount of fertilize or farm waste drain into a river, the concentrations of nitrate and phosphate in the water increase considerably. Algae use these substances to grow rapidly, turning the water green. This massive growth of algae leads to pollution. When the algae die, they are broken down by the action of the bacteria, which quickly multiply, using up all the oxygen in the water and therefore
实用文档
causing the death of fish.
Second, industrial waste. Factories sometimes discharge chemical waste into rivers. Examples of such pollutants include cyanide, lead, copper, and mercury. These substances may enter the river in such high concentrations that fish and other animals are killed immediately. Sometimes the pollutions enter the food chain and accumulate until they reach toxic levels, eventually killing fish and other animals.
Third, oil pollution. If oil enters a slow-moving river, it forms a rainbow-colored film over the entire surface, preventing oxygen from entering the water.
Fourth, warm water. Industry often uses water for cooling processes, sometimes discharging large quantities of warm water back into rivers. A higher temperature of the water lowers the level of dissolved oxygen and upsets the balance of life in the water. 如果你看到死鱼漂浮在河上或发现水变色发臭，你知道那条河被污染了，和有四个主要的它可能的原因。
第一，施肥。如果大量施肥或农场废物排入河中的水，大大增加的硝酸盐和磷酸盐的浓度。藻类利用这些物质的快速增长，将水绿色。这种大规模的藻类生长导致污染。当藻类死亡，他们打破了细菌的行动，并迅速繁殖，耗尽水中的氧气，导致鱼类死亡。
第二，工业废水。工厂排放的化学废料排入河流有时。等污染物的例子包括氰化物，铅，铜，汞。这些高浓度物质进入河中可能立即杀死鱼类和其他动物。有时，污染物进入食物链积累到有毒水平，最终杀死鱼类和其他动物。
第三，石油污染。如果油进入流动缓慢的河流，它形成了一个彩虹色膜的整个表面，防止氧进入水。
第四，温水。行业经常采用水冷却的过程，有时排出大量的温水回到河流。较高的水的温度降低溶解氧水平，使生命的水平衡。
Question and key:
1. What is the passage mainly about? D) The causes of river pollution.
2. Why does the river water turn green?
A) Because nitrate and phosphate in the water increase. 3. What harm does industrial waste cause? B) Poisoning..
4. Which of the following is true of oil pollution? C) It prevents oxygen from entering the water. 5. What harm can warm water in a river bring? D) Lack of oxygen.