(
课件网) Unit 6 Survival Plan B: Life on Mars Learning objectives In this class, you will complete a quiz about Mars; figure out the structure of the passage; find out the detailed information in the passage; Where is Mars How much do you know about Mars 1) Mars is the _____ smallest planet in the solar system. a. second b. third c. fourth 2) The surface of Mars is covered in _____. a. rocks b. water c. grass a a 3) The average recorded temperature on Mars is _____. a. 40 ℃ b. 2 ℃ c. -63 ℃ 4) One day on Mars is about _____ long. a. 18 hours b. 24 hours c. 37 hours c b Try to guess if you are not sure of the answers. 木土天海地金火水 minus sixty-three degrees Celsius Why do we have Plan B for Earth One option— Mars. Why Difficulties of exploring Mars Humans’ exploration related to Mars Right now, Earth is the only home we have! Paragraph 1 Paragraph 2 Paragraph 3 Paragraph 4 Paragraph 5 Activity 1 Work out the main idea of each paragraph. Read for details. Para. 1 In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. 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 What is our Plan B for Earth advance n. 前进，进步，进展 v. 前进，促进，提前 advanced adj. 高等的，先进的，高级的 make great advances in 在...取得巨大进步/进展 wipe out彻底摧毁；消灭 renewable energy 可再生能源 lower this risk 降低这种风险 at the push of a button 按下一个按钮 引申为”轻易地” Read for details. Para. 1 In the 1960s and 1970s, the greatest fear was that the human race, and possibly all advanced life forms on the planet, could be wiped out by nuclear missiles, just at the push of a button. Today, however, environmental problems have taken over as the greatest risk to life on Earth. 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 What is our Plan B for Earth 在20世纪60年代和70年代，最大的恐惧是人类，可能还有地球上所有先进的生命形式，只要按一下按钮，就会被核导弹消灭。然而，今天，环境问题已经成为地球上生命的最大威胁。科学家们正在考虑降低这种风险的方法，比如用可再生能源取代煤炭和石油。但他们也在为最坏的情况做准备：如果《后天》等电影中的恐怖场景发生在现实生活中，我们该怎么办？我们对地球的B计划是什么？ Read for details. Para. 1 Considering great risks to life on Earth, human's Plan B for Earth is put forward. In the 1960s and 1970s, the greatest fear was that the human race, and poss ... ...
