Unit 5 Into the Unknown Listening and Speaking 课件-2022-2023学年高二下学期英语外研版（2019）选择性必修四册

Unit 5 Period 3 Listening and Speaking 新 课 导 入 What will you do when you face the unknown? 1. 能通过阅读与单元主题相关的语篇，学习更多与主题相关的词汇和表达，进一步理解面对未知时的正确做法。 2. 能听懂与探索人类大脑及睡眠奥秘相关的话题内容，能够恰当地运用功能性表达询问信息、解释信息；思考如何主动且理性地探索求真。 学习目标 课 堂 学 习 1 Read the passage and answer the questions. Pay attention to the words and expressions in bold. When something strange or unfamiliar happens, the flight instinct can kick in. Often, making a quick getaway is a sensible and understandable natural response, dating back to a time when our ancestors were running for their lives from dangers, such as wild animals, lightning and fire. So while you may be tempted to check out a strange object or to test the waters of a new situation, it can be safer to steer clear of the unfamiliar. However, not everyone chooses to follow this instinct. Instead of retreating to their caves, some of our ancestors chose to subdue their fears and pursue the unknown - and this curiosity led them to, for instance, discover the use of fire. In more recent times, Norwegian explorer, Roald Amundsen endured one of the most hostile environments on Earth when he set out into uncharted territory to reach the South Pole. These reactions help humankind delve into the unknown and advance towards a more progressive and civilised society. Of course, exploration doesn't have to mean blindly throwing ourselves into the unknown, and it's never wrong to think twice before taking action. While there is no need for us to shrink from new situations, we should always look into things first and consider our options. 1 What is the flight instinct? Why do some people react that way in the face of the unknown? 2 What other reactions could people have when facing the unknown? Flight instinct is our instinctive reaction to get away from a strange, unfamiliar or dangerous situation. Some people react that way in the face of the unknown because it is a sensible and understandable natural response. Some people choose to overcome their fears and face the