Unit 3 Conservation Lesson 1 The Sixth Extinction 课件-2023-2024学年高二英语北师大版（2019）选择性必修第一册

Lesson 1　The Sixth Extinction CONSERVATION UNIT 3 1.To read and talk about conservation; 2.To read for general understanding; 3.To read for specific information and understanding words in the context; 4.To express solutions to environmental problems. Pre-reading 1. What does the word “Extinction” mean? Extinction is a situation in which something no longer exists on our planet. 1. How many times up to today has life on Earth almost died out? A. Once. B. Five times. C. More than 10 times. 2.About what percent of all species on Earth became extinct during the mass extinction known as the “Great Dying”? Less than 10%. B. Nearly 50%. C. More than 90%. 3. What do scientist think will cause the next mass extinction? A. Human activity. B. Natural causes. C. Unknown reasons. 2. How much do you know about extinction? Choose the option based on your knowledge. 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? Extinctions take action a sixth extinction 3. What is the type of this article? A. Narration (记叙文). B. Argumentative Essay (议论文). C. Expository Writing (说明文). D. News Report (新闻报道). √ 1. How many times up to today has life on Earth almost died out? A. Once. B. Five times. C. More than 10 times. 2.About what percent of all species on Earth became extinct during the mass extinction known as the “Great Dying”? Less than 10%. B. Nearly 50%. C. More than 90%. 3. What do scientist think will cause the next mass extinction? A.