Unit 5 Revealing Nature Starting out & Understanding ideas 课件-2023-2024学年高二英语外研版（2019）选择性必修第一册

Unit 5 Period 1 Starting out & Understanding ideas 课 堂 学 习 Look at the page from a science magazine and answer the questions. 1 What do you know about these animals? What makes them special? 2 What other similar animals do you know about? Share your knowledge with the class. They are all species that exist thousands of years on earth. They are old and rare (unusual). 1 Starting out Watch the video and answer the questions. 2 1 How can seeds travel? How can this benefit plants? 2 Can you think of another example of seeds travelling? Share it with the class. 1 How can seeds travel? How can this benefit plants? 2 Can you think of another example of seeds travelling? Share it with the class. Seeds usually are carried by the wind, water, and animals. Plants can have a better chance at life. 1 What species do you recognise in the picture? 2 What factors can cause the process of evolution? Paramecium, earthworm, snail, crab, fish, tortoise, bird, horse, human, frog, alga, moss, fern... The ever-changing environment of nature, environmental changes, population immigration, genetic mutation, cultural preferences... 1 Look at the evolutionary tree and answer the questions. Understanding ideas evolutionary tree 2 Predict the main idea of the text according to the picture and the title. A Journey of Discovery Predicting A Journey of Discovery The captain of the ship, the Beagle, wanted someone who would “profit by the opportunity of visiting distant countries yet little known”. The person who answered the call was not the captain's first choice. It was a young man who had left medical school without completing his degree. What's more, he had recently received a letter from his father predicting that he would be “a disgrace to yourself and all your family”. Despite all this, his adventures on this ship would lead to one of the most important scientific discoveries of all time. The young man in question, Charles Darwin, was a geologist and natural