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课件网) Unit 3 Conservation Lesson 1 The Six Extinction —Reading Comprehension By the end of this period, you will be able to: 1. read and talk about conservation; 2. read for general understanding; 3. read for specific information and understanding words in context; 4. express solutions for environmental problems. How much do you know about extinction Choose the option. 1. How many times up to today has life on Earth almost died out A. Once. B. Five times. C. More than 10 times. Pre-reading √ 白垩纪-古近纪灭绝事件 恐龙大灭绝 Cretaceous–Paleogene extinction event 奥陶纪-志留纪灭绝事件 Ordovician–Silurian extinction event 三叠纪-侏罗纪灭绝事件 Triassic–Jurassic extinction event 泥盆纪大灭绝 Late Devonian extinction 二叠纪－三叠纪灭绝事件 Permian–Triassic extinction event / Great Dying Biological Extinction in Earth History 地球历史上的生物灭绝 2. About what percent of all species on Earth became extinct during the mass extinction known as the “Great Dying” A. Less than 10%. B. Nearly 50%. C. More than 90%. “Great Dying” √ 3. What do scientists think will cause the next mass extinction A. Human activity. B. Natural causes. C. Unknown reasons. √ Read the passage quickly and match the main idea with each paragraph. Para.1 A. Human activity causes species to die out faster. Para.2 B. How do we avoid a sixth mass extinction Para.3 C. Extinctions in history and the reasons. Para.4 D. The possible consequences of the sixth mass extinction. While-reading _____ are not unusual in our Earth’s history. But we humans can _____to stop destroying the planet we live on to avoid_____. 2. What is the main idea of the passage 3. What is the type of this article A. Narration. B. Argumentative Essay. C. Expository Writing. D. News Report. Extinctions take action a sixth extinction √ 96% dinosaurs Asteroids sea levels oxygen content 1. Fill in the blanks. Para. 1: Extinctions in history and the reasons 2. Which writing method is NOT used in this paragraph A．Giving data. B．Analyzing cause and effect. C．Making comparison. D．Arranging in the time order. √ 1. What did scientists find out in 2015 They found that human activity is causing species to die out 1,000 times faster than normal. 2. What are the reasons why so many species are dying out The reasons are varied, such as air and water pollution, forests being destroyed, factory farming and overfishing. Read Para. 2 carefully and answer the following questions. Para. 2: Human activity causes species to die out faster 3. Which sentence in this paragraph can replace the following one What is obvious is that our human activity has had a negative influence on all other species on Earth, such as animals and plants. It is clear that human activity has negatively affected all other species on Earth, including animals and plants. 1. What would happen if a sixth mass extinction occurs ▲Up to _____of all species on Earth could die out. ▲Humans would al ... ...
