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21世纪大学英语读写教程第一册09

2011-03-25 06:30
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Unit 9 Text A Listening

First Listening
Before listening to the tape, have a quick look at the following words.

greenhouse effect
温室效应

alter
改变

release
排放

carbon dioxide
二氧化碳

tropical
热带的

ecology
生态

global
全球的

pattern
模式

Venus
金星

thermometer
温度计

Second Listening
Listen to the tape again. Then, choose the best answer to each of the following questions.

1. Which of the following topics does the listening passage mainly discuss?
A) The dangers caused by changes in the atmosphere.
B) Problems on the planet Venus.
C) The damage done by different types of pollution.
D) Ways of growing flowers in the winter.
2. What does the term "greenhouse effect" refer to?
A) A "blanket" of green glass being built over some low-lying cities.
B) O1d trees being cut down in order to build houses.
C) A warming of the earth's temperatures.
D) A cloud of green dust on the planet Venus.
3. Which of the following is mentioned as a reason for the buildup of carbon dioxide in the atmosphere?
A) Burning of fuels by cars and factories.
B) A large increase in the number of trees in some areas.
C) A large decrease in the number of trees in some areas.
D) Pollution in the earth's rivers and streams.
4. What changes in global weather patterns might the greenhouse effect create?
A) An increase in rain in some places.
B) A decrease in rain in some places.
C) A shift in the patterns of ocean tides.
D) Both A) and B).

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