1、Unit 5Period 3 Listening and Speaking新 课 导 入What will you do when you face the unknown?学习目标学习目标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。课 堂 学 习1Read the passage and answer the questions.Pay attention to the words and expressions
2、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
3、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-an
4、d 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 a
5、dvance towards a more progressive and civilised society.Of course,exploration doesnt have to mean blindly throwing ourselves into the unknown,and its 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 an
6、d 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 reac
7、t 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 unknown.2Put the words and expressions into the table.Add any more you can think of.making a quick getaway,running for their lives,check out,test
8、 the waters of,steer clear of,retreating to,subdue,endure,set out into,delve into,think twice,taking action,shrink from,look into,consider our optionsAvoidingExploringOvercomingHesitatingmaking a quick getaway,running for their lives from,steer clear of,retreating to,shrink fromcheck out,test the wa
9、ters of,set out into,delve into,taking actionsubdue,endurethink twice,look into,consider our optionsRead the passage and answer the questions.3Of all the workings of the human body,there is one organ that produces the most intrigue amongst scientists.The brain is the centre of the nervous system and
10、 controls most of the bodys activities.Interestingly,it is the back part of the brain that is involved with our vision.The sides of the brain are involved in memory,speech and rhythm.Although the brain amounts to only about 2%of total body weight,it uses up to 20%of the bodys energy-more than any ot
11、her organ.Scientists have been conducting research in order to seek greater understanding of the brain,especially since the 1950s.Nevertheless,there is still a long way to go before we can completely understand the workings of this complex organ.1 What functions of the brain are mentioned in the pas
12、sage?2 What is the current research situation concerning the brain?3 Do you know any other interesting facts about the brain?Share them with the class.The brain functions mentioned include its being the centre of the nervous system and controlling most of the bodys activities,including vision,memory
13、,speech and rhythm.There is still a long way to go before we can completely understand the workings of the brain.4Listen to the interview and choose the topic discussed.1 Methods to keep the brain healthy and active2 Sleep-related mysteries3 Ways of improving sleep quality4 Methods of interpreting d
14、reamsListen again and complete the table.5TheoriesDr Longs CommentsThe brain needs time to 1_.Recent studies prove that our brains 2_ during sleep.The brain 3_ when were awake.It needs sleep to 4_.There isnt 5_ to confirm this.It might not be 6_ for sleep.7_ in the brain while were awake,and the bra
15、in reflects on them and 8_ in our dreams.A lot of research has been conducted,but we still cant prove that 9_.Other unanswered questions Why do we“see”our dreams?10_Answers:1 rest and do maintenance2 remain active3 makes lots of poisonous chemicals 4 remove these chemicals5 enough data6 the most imp
16、ortant reason7 New connections are formed between different parts8 uses them to form new memories9 sleep is necessary to this function10 Why do some people dream in colour and others dont?Now use the information in the table to give a lecture to the class.Do further research if necessary.6Complete t
17、he boxes with the expressions from the interview.ExplainingAsking for more information Could you tell us something about.?What other reasons could there be for it?Would you tell us more about.?Its because.prove that.Could you tell us What other reasons something about.?could there be for it?Its beca
18、use.Would you tell us more .prove that.about.?7Work in groups.Talk about the investigations into another scientific mystery using the words and expressions in this section.Do further research if necessary.Now talk about how effectively you and your group have used the words and expressions you have
19、learnt in this section and suggest ways to improve.课堂总结课堂总结1.Talk about how to face the unknown using the words and expressions about avoiding,exploring,overcoming and hesitating.2.Talk about the investigations into a scientific mystery using the expressions about asking for more information and explaining.
