1、Unit 1 Great scientistsListen to Part 1.Father of the Chinese space programmeYu Ping(YP)is talking to her friend Steve Smith(SS)about Qian Xuesen and his work as a rocket scientist.A GREAT CHINESE SCIENTISTFather of the Chinese space programmeYu Ping(YP)is talking to her friend SteveSmith(SS)about Q
2、ian Xuesen and his work as a _ _.A GREAT CHINESE SCIENTISTrocket scientistListen again and fill in the blanks.YP:What do you want to be when you _ _,Steve?SS:I want to be an _ and visit stars.I wish to visit _ one day.YP:I think Id like to work in the space industry too.Id like to be a _ _ like Qian
3、 Xuesen.SS:What did he have to do to become a rocket scientist?grow upastronomerMarsscientistrocketYP:Well,he first studied at _ to be an engineer.Later he went to America to study for his _ _.It was then he began to work on rockets.SS:So it was _ for our space programme that he came back to China.u
4、niversitydegreedoctorsluckyYP:Very much so.There was no work _ space rockets in China before he began his _ to design and build rockets to go into space.instituteonListen to Part 2.Part 2SS:Do you think he wanted to travel into space in one of his rockets?YP:I have no idea but I believe he _ _ to th
5、e first space flight by a Chinese astronaut.forwardlookedListen again and fill in the blanks.SS:Yes.Now that China has _ satellites _ space.I hope well be the _ to land on Mars.That would really be something special and if I were that astronaut I would put Qian Xuesens _ on Mars to show how much we
6、_ his work.sentintofirstadmirepictureYP:Indeed.He is rightly called the _ of the Chinese space programme.He is my _ and he is why I want to be a rocket scientist.SS:Well,wed better _ _ _ our homework.We need good _ to get into university.YP:Right you are.See you,then.SS:See you.fatherheroget on with
7、grades NAMING A FLOWERRobert Briggs(RB)is talking to Zhang Wei(ZW)about a new kind of lily he has found.NAMING A FLOWERRobert Briggs(RB)is talking to Zhang Wei(ZW)about a new kind of _ he has found.Listen again and fill in the blanks.lilyZW:Hello Robert.Whats that book youre _?RB:A book that helps y
8、ou _ a flower.ZW:I see.Why do you want that?RB:Ive found this lily.It looks _ to me.So I want to _ _ if its new or not.Our biology teacher told me that if its already _,Id find it in this book.carryingidentifydifferentfind outknownZW:Wow!So you think you may have found a new lily?RB:I hope so,but I
9、have to do some _ first to find out for sure.ZW:What happens if its in the book?RB:It means that somebody else has found it and _ it.Then Ill know its biological name.ZW:What do you mean by the _ name?researchnamedbiologicalRB:Actually like us a flower has _ names.The first is the group of flowers i
10、t _ to like a family name.A rose is one such group.The second is the kind of flower like a _ name.It may describe what the rose _ like;for example,the colour of an autumn _.Together you get the flowers name,which is Rose Autumn Sunset.twobelongsgivenlookssunsetZW:Gosh!Who made that _?RB:A great _ ca
11、lled Carl Linnaeus.He lived in Sweden from _ to 1778.ZW:So long ago!RB:Yes,and he solved a very _ problem for biology.ZW:What was that?systemseriousscientist1707RB:Before him _ could tell if a plant was new,as there was no way of _.Therere so many plants,you see!ZW:Yes,I _ that!So his system is stil
12、l used?RB:_ it is.If my flower isnt in this book,Ill know that Ive found a new kind of lily.nobodycheckingappreciateIndeedZW:Thats great!Can I come and help you?This research _ fun.RB:Yes,and if Im lucky (fading out)soundsListen to Part 1.A MATHEMATICIANS PROBLEM John Smith(JS)is talking to Zhao Yan
13、g (ZY)about a mathematician who interests him.A MATHEMATICIANS PROBLEM John Smith(JS)is talking to Zhao Yang (ZY)about a mathematician who _ him.Listen again and fill in the blanks.interestsJS:Do you know that weve been studying Euler in _?ZY:Who is he?Ive never _ of him.JS:Well,he was a famous math
14、ematician in the _ century.He revised all the _ mathematics that was known in his day.mathsheardeighteenthpureZY:That probably wasnt very much.JS:Youre wrong there.He wrote _ _ any other mathematician before or since.ZY:Really!Well,what did he do?JS:He introduced a lot of _ into mathematics _ _ pi a
15、nd the terms sin and cosin.more thansymbolssuch asZY:Wow!JS:And he did half of this work when he was _.ZY:How did he do that?JS:He told his ideas to someone else who _ them _.blindwrotedownListen to Part 2.Part 2ZY:What were his _?JS:He introduced a new _ of mathematics called topology.It helps you
16、understand things by using _.The _ map is a good example.Listen again and fill in the blanks.achievementsbranchdiagramssubway It does not tell you _ but it shows how stations _ together.ZY:How did he start topology?JS:Well,in _ he was _ by a problem in the city of Konigsberg where he lived.distances
17、connect1735inspired Look at the map in your book.Konigsberg had a river running _ it.The centre is an _.As the river _ the island,it breaks into two parts.Seven bridges were built _ the river.Euler wondered if you could walk _ the city so that you _ each bridge only once.throughislandpassesoveraroundcrossZY:Let me try that.It sounds quite _ to me.JS:Try,but its not _ easy _ it looks.simpleasas
