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

Plan B: Life on Mars ? Developing Ideas How much do you know about Mars? Quiz Mars is the ______ smallest planet in the solar system. A. second B. third C. fourth D. fifth What is the common nickname for Mars? A. Rocky Planet B. Red Planet C. God of War D. Beauty Planet How old is the Mars? A. 46 billion years old. B. 4.6 million years old C. 4.6 billion years old D. 46 million years old What’s the average recorded temperature on Mars? A. 40°C B. 5°C C. —100°C D. — 63°C Is there water on Mars now? A. Yes, for sure. B. No, it can’t be. C. We don’t know it for now. D. Dear, God. How would I know? Developing Ideas Predict the main idea according to the title and the pictures. A. Replacing coal and oil with forms of renewable energy on Earth. B. Exploring other planets, such as Mars, to live on. C. Educating the public to learn the knowledge of space. D. Using rovers to search for new resources. What does Plan B mean in the passage ? Read the passage fast and match the general ideas with each paragraph. Paragraph 1 Paragraph 2 Paragraph 3 Paragraph 4 Paragraph 5 C. Why scientist put forward Plan B? A. What efforts have we made to explore Mars? D. What could we do now? E. What is our Plan B for earth? B. What difficulties do we have sending people to Mars? coal and oil renewable energy the greatest risk at present Plan A A. Nuclear missiles.. B. Environmental problems. C. Exploring space. D. Pollution. What was the greatest risk to live on the Earth ? A. Because there is no pollution. B. Because there is no risk to live there. C. Because it is relatively(相对地) close to Earth and a less hostile(不利的) environment. D. Because there is much resources we can explore for our Earth. Why Mars is the most likely choice to live on for humans? robots probes space craft ...valuable data and stunning images;discoveries about soil,resources,water etc . manned missions to Mars A. It only takes three days to reach Mars. B. Human settlement of Mars is possible. C. The first sett