高职高专核心英语综合教程下册.pptxVIP

高职高专核心英语综合教程下册第1页/共68页 Background References第2页/共68页 Background References What is pollution? Pollution is the introduction of contaminants into an environment that causes instability, disorder, harm or discomfort to the ecosystem. Pollution can take the form of chemical substances, or energy, such as noise, heat, or light. 第3页/共68页 Background References The Major Forms? Air pollution --- the release of chemicals and particulates into the atmosphere. ? Water pollution --- the release of waste products and contaminants into surface runoff into river drainage systems第4页/共68页 Background References The Major Forms? Soil contamination --- chemicals are released/ soil contaminants are hydrocarbons, heavy metals, ? Littering --- living wastes第5页/共68页 Background ReferencesRadioactive contamination ---nuclear power generation and nuclear weapons research, manufacture and deployment. ? Noise pollution --- roadway noise, aircraft noise, industrial noise as well as high-intensity sonar. The Major Forms第6页/共68页 Practice Book(answer key)Part 1Activity 1Activity 2Activity 3Part 2Earth SongExercise 1Exercise 2Exercise 3Part 3Pre-ReadingText AText BPart 4BrainstormingTaskPart 5ActivityAnswersMain Contents第7页/共68页 Part I : Speaking ActivityActivity 1: Look at these pictures and discuss what kinds of pollution they are.Air PollutionWaterPollutionNoisePollutionlightPollutionLitterPollution第8页/共68页 Part I : Speaking ActivityActivity 2: The students are told that they are an educational committee, which has to advise the principal of a school on problems with students’ littering. What would they advise with regard to the problem? They should discuss their recommendation and write it out in the form of a letter to the principal after class.第9页/共68页 Part I : Speaking ActivityActivity 3: What do we do to protect the environment in our daily life.第10页/共68页 A: What is the environment like in your country?B: Not so good.A: E