Plastic,new solution,biodegradable plastic,break down,PBS ableware,microorganism,enzyme,degrade,dump 2. Environmental protection is a big issue nowadays.What can be done 20min to help protect the environment?Listen to a news report about PBS, biodegradable plastic product and complete the outline with key wordsand phrases.(P93) Part I PatⅡA-C PartⅢ 3.Listen again to check the answers. 10 min 4.Listen to three short talks given by three persons.Fill in the missing 20 min words.(P91) Talk One: Talk Two: Talk Three 5.Listen to the following story,and then answer some questions 10 min 6.Ask the students to retell the story just now they heard. 10min 7.Listen toa piece of News,and then answer some questions 10 min 8.Ask the students to talk about the news just now they heard. 10 minPlastic, new solution, biodegradable plastic, break down, PBS, tableware, microorganism, enzyme, degrade, dump 2. Environmental protection is a big issue nowadays. What can be done to help protect the environment? Listen to a news report about PBS, a biodegradable plastic product and complete the outline with key words and phrases. (P93) Part Ⅰ Part Ⅱ A-C Part Ⅲ 3. Listen again to check the answers. 4. Listen to three short talks given by three persons. Fill in the missing words. (P91) Talk One: Talk Two: Talk Three: 5. Listen to the following story, and then answer some questions. 6. Ask the students to retell the story just now they heard. 7. Listen to a piece of News, and then answer some questions. 8. Ask the students to talk about the news just now they heard. 20 min 10 min 20 min 10 min 10 min 10 min 10 min