College English

CONTEMPORARY

Listening

主讲： 王华

Unit 1University Life

Unit 2Men, Animalsand Pets

Unit 3Hobby

Unit 4Transportation

Unit 7Festivals

Unit 15 News

Objectives

Contents

Language and Cultural Tips

Objectives

1. Understand descriptions of plants , animals , natural Phenomena , the threat to and the protection of the environment

2. Follow discussions of advantages and disadvantages

3. Make inferences

4. Summarize main ideas and give supporting details

Listening Aids

catastrophe infrastructure inflict erupt endemic emission eclipse disposable deposit cordial conservation congestion condense tribal erupt 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 withinThe 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 funeral 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 co

me 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.