文档介绍：R einforcement
T ext Analysis
B ackground
W arming up
Silent Spring
Unit 5
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现代大学英语精读UnitSilentSpring
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Questions/Activities
Check-on Preview
Objectives
Warming up
Silent Spring
Unit 5
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现代大学英语精读UnitSilentSpring
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Work in pairs to name environmental problems that
are threatening our world.
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现代大学英语精读UnitSilentSpring
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现代大学英语精读UnitSilentSpring
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sand storm
desertification
soil erosion
水土流失
Deforestation
采伐森林
Salinization
盐化（作用）
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sea turtle
polar bear
农药：farm chemical
Siamese twins
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Environmental Problems
Air-related environmental problems
Greenhouse effect
Ozone depletion
Air pollution
water-related environmental problems
Acid rain
Wastewater
Water crisis
Marine pollution and acidification
海洋污染和海水酸化
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Land-related environmental problems
Problems arising from inefficient land use (urban sprawl城区的无计划扩张 , habitat fragmentation栖息地破碎化 , habitat destruction)
Problems arising from land pollution and degradation (desertification, land pollution, soil pollution)
Other environmental problems
The use of pesticides
Inefficient use of resources and energy crisis
Conservation (species)
Non-recyclable waste (plastic and electronic waste)
Genetic engineering (genetically modified foods)
Nuclear development and nanotechnology
Population explosion
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现代大学英语精读UnitSilentSpring
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Check-on Preview
We are faced with all kinds of environmental problems nowadays. But what is the one that Rachel Carson dealt with in her book Silent Spring?
In what way is Rachel Carson unparalleled?
Does Carson mean that insecticides should never be used in agriculture?
How do you see the environmental problems in your city? How should our government do? and how should we citizens of this city do?
Warming up
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现代大学英语精读UnitSilentSpring
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1. Content & Message:
fill in the gap in our knowledge of the environment of