Unit5;;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。;;Inmorerecenttimes,Norwegianexplorer,RoaldAmundsenenduredoneofthemosthostileenvironmentsonEarthwhenhesetoutintounchartedterritorytoreachtheSouthPole.

Thesereactionshelphumankinddelveintotheunknownandadvancetowardsamoreprogressiveandcivilisedsociety.Ofcourse,explorationdoesnthavetomeanblindlythrowingourselvesintotheunknown,anditsneverwrongtothinktwicebeforetakingaction.Whilethereisnoneedforustoshrinkfromnewsituations,weshouldalwayslookintothingsfirstandconsiderouroptions.;1Whatistheflightinstinct?Whydosomepeoplereactthatwayinthefaceoftheunknown?;2;Readthepassageandanswerthequestions.;1Whatfunctionsofthebrainarementionedinthepassage?;4;;Answers:

1restanddomaintenance

2remainactive

3makeslotsofpoisonouschemicals

4removethesechemicals

5enoughdata

6themostimportantreason

7Newconnectionsareformedbetweendifferentparts

8usesthemtoformnewmemories

9sleepisnecessarytothisfunction

10Whydosomepeopledreamincolourandothersdont?;Nowusetheinformationinthetabletogivealecturetotheclass.Dofurtherresearchifnecessary.;6;7;Nowtalkabouthoweffectivelyyouandyourgrouphaveusedthewordsandexpressionsyouhavelearntinthissectionandsuggestwaystoimprove.;