Unit 6 Survival Developing ideas Reading 课件-2023-2024学年高二英语外研版（2019）选择性必修第二册

Environmental Crisis Quiz √ √ √ √ Do the quiz and talk about what you know about Mars. Mars Earth minus 63 degrees Celsius Is it possible to live on Mars? Plan B：Life on Mars？ Predict the main idea according to the title and the pictures. Predict：What would be talked about? Para1. Para2. Para3. Para4. Para5. Get the main idea for each paragraph The introduction of the topic The author’s opinion Within the text. The possibilities and challenges of living on Mars Why do we have Plan B for Earth? fear In the 1960s and 1970s Today nuclear missiles environmental problems solution Scientists are thinking of ways to lower this risk, such as replacing coal and oil with forms of renewable energy . But they are also preparing for the worst: what can we do if the terrifying scenes in films such as The Day After Tomorrow happen in real life? Plan B About the text. Read Para 1. Possibilities Challenges Natural factors Living aspect The exploration Read Para2-5 Can you find out the possibilites and challenges for us to explore the Mars? 8 Possibilities Challenges Natural factors Living aspect The exploration 1.Relatively close 2.Less hostile About the text. 9 Unmanned spacecraft probe robots Space agencies The exploration of Mars sending back Planning manned mission to Mars within the next 25 years About the text. orbit Explored the Martian surface Testing the soil searching for resources, water and signs of life Possibilities Challenges Natural factors Living aspect The exploration 1.Relatively close 2.Less hostile 1.Unmanned spacecraft 2.Probs 3.Robots 4.Space agencies 1.Succeed in planting 3.All the skills, courage, intelligence are needed 1.Long-time flight 2.Dangerous solar radiations 4.Not able to return 4. Hard to staying alive （experiment） Infer the author’ opinion— Is it possible to live on Mars? About the text. Para.2-4 11 Para4： 1. Staying alive will be a daily challenge, but as proved by the Biosphere 2 experiment, not impossible. 2. Although the t