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CONTEMPORARY
College English
Listening
主讲： 王华
Unit 1
University Life
Unit 4
Transportation
Unit 2
Men,
Animals
and Pets
Unit 7
Festivals
Unit 3
Hobby
Unit 15
News
Objectives
Contents
Language and Cultural Tips
Objectives
4. Summarize main ideas and
give supporting details
3. Make inferences
2. Follow discussions of advantages and
disadvantages
1. Understand descriptions of plants , animals , natural
Phenomena , the threat to and the protection
of the environment
Listening Aids
catastrophe infrastructure
endemic
emission
deposit
cordial
condense
tribal
inflict
eclipse
conservation
erupt
erupt
disposable
congestion
reimburse
Background information
What is nature ?
Everything that exists in the world
indepenently of people ,such as plants and
animals , earth and rocks , and the weather .
Where is the Antarctica ?
A continent with a coastline of about 23,000 km . Largely within
The Antarctic Circle . There are no permannent inhabitants .
Political sovereignty is disputed . The continent , surrounded by
Pack ice and icebergs, is an ice-covered plateau with mountain
Peaks rising to 4500 m, some of them volcanic .Average
Temperature all over the continent are below freezing .
Bali
a tropical island in the Indonesian archipelago,
is so picturesque and immaculate it could almost be a painted
backdrop. It has rice paddies tripping down hillsides like giant steps,
volcanoes soaring up through the clouds, dense tropical jungle, long
sandy beaches, warm blue water, crashing surf and friendly people
who don't just have a culture but actually live it. In Bali spirits come
out to play in the moonlight, every night is a festival and even a funera
is an opportunity to have a good time.
Bali Beaches
Architecture in Bali
Bali Arts Festival

Restaurants in Bali
Mount St. Helens,
Sunset on Mount St. Helens
Mount St. Helens vented a new column
of steam October 10, a lazy plume that
rose out of the crater
of the snow-dusted volcano.

How does acid deposition affect human health?

We eat food, drink water, and breathe air that has
come in contact with acid deposition.

Canadian and U.S. studies indicate that there is a link
between this pollution and respirator problems in sensitive
populations such as children and asthmatics.

Acid deposition can increase the levels of toxic metals
such as aluminum, copper, and mercury in untreated
drinking water supplies.

What causes acid rain?
Acid rain is rain, snow or fog that is polluted by
acid in the atmosphere and damages the environment.
Two common air pollutants acidify rain: sulphur
dioxide (SO2) and nitrogen oxide (NOX). When these
substances are releasedsintosthe atmosphere, they can
be carried over long distances by prevailing winds
and return to earth as acidic rain, snow, fog or dust.
When the environment cannot neutralize the acid
being deposited, damage occurs.