国际交流英语视听说 国际交流英语视听说 国际交流英语视听说 国际交流英语视听说 Unit 2 Protecting Our Planet Book 4国际交流英语视听说 国际交流英语视听说 国际交流英语视听说 国际交流英语视听说 Think and Discuss Viewing the World Exploring the Theme Analytical Listening Sharing Your Ideas Engaging Further Listening Content国际交流英语视听说 国际交流英语视听说 T hink and DiscussQuestions An endangered turtle floats over a dead coral reef. 1. Look at the photo and read the caption. What do you imagine this scene looked like 50 or 60 years ago? What caused the change? 2. What are some reasons