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1、Unit 6-Conversation 1 Janet:What are you reading,Kate Kate:Alice in Wonderland,by Lewis Carroll.Do you know it Janet:Ive heard of it,yes,but Ive never read it.Its a 19th century childrens story,isnt it Kate:Thats right.Its very famous.Its set in Oxford.It starts with this young girl sitting on a riv
2、er bank.The interesting thing is,the author,Lewis Carroll,he was an Oxford professor and he used to have tea with the girls family on this river bank.Janet:Oh,thats fascinating!Ill put it into my diary.Kate:Is that what youre writing I know youve been keeping a diary all the year.Janet:Its been a gr
3、eat year.Ive had such a good time so lucky to have Mark and Kate as friends.Feel Ive been doing well with work.Much happier about asking questions in tutorials.Janet:My screens gone dark.Mark:Youre using the battery,remember.Its run out,obviously.Janet:It cant be the battery.Its still charged.Oh no
4、its still black.Oh dear,I hope its nothing serious.I havent backed anything up recently.Kate:Thats not like you,Janet.Janet:I know,but I lost my memory stick.I really should have backed things up.How stupid of me not to do that!Supposing Ive lost everything!Mark:Let me take a look.The power is still
5、 on.And also the operating system still seems to be working.I think it has to be the graphics card.But maybe thats not the problem.Janet:If only Id backed things up!Kate:Relax,Janet!Well take it to the computer shop this afternoon.Im sure itll be OK.Janet:I hope so.Unit 6-Conversation 2 Janet:Tell m
6、e about Alice in Wonderland.Kate:I tell you what,Ill read it to you.Kate:Alice was beginning to get very tired of sitting by her sister on the bank and having nothing to do:Once or twice,she had peeped into the book her sister was reading,but it had no pictures or conversations in it,and what is the
7、 use of a book,thought Alice,without pictures or conversation So she was considering in her own mind(as well as she could,for the hot day made her feel very sleepy and stupid).Janet:Kate,Mark,where are you going Youve got my laptop!Kate:Its all right,Janet,were taking it to the computer shop.Well be
8、 back soon.Mark:Its not like Janet to forget to back up her work.Kate:She should have been more careful.Janet:It was stupid of me,I know!Stupid,stupid!Janet:Oh!It was a dream!What a relief!Kate:You were talking in your sleep.Janet:What was I saying Kate:Stupid,stupid.Mark:Ive sorted out your compute
9、r.Janet:Have you Oh,thank goodness!What was the problem Mark:It was the graphics card,as I predicted.Janet:Is that what it was!Im so relieved!Thanks,Mark.Kate:Hes great,isnt he Janet:Yes.So are you,Kate.Kate:Youre such a good friend.Unit 6-Outside view Computers are a very important part of our live
10、s.They tell us about delays to transport.They drive trains,analyze evidence and control buildings.Did you know that 60 per cent of homes in Britain have got a PC(a personal computer)For many young people,playing computer games is their favorite way of spending spare time.Computers are a very importa
11、nt part of most areas of life in Britain-libraries,the police and in school.But they are becoming more important in our homes as well.Theyll even control the way we live-in“smart homes”or computer-controlled houses.The smart home is now a real possibility.It will become very common.A central compute
12、r will adjust the temperature,act as a burglar alarm and switch on lights,ready for you to come back home.And of course you will be able to give new instructions to the computer from your mobile phone.So if your plans change,your home will react to match.Many homes have got lots of televisions and s
13、everal computers.The smart home will provide TV and Internet sockets in every room,so youll be able to do what you want whenever you want.If the temperature outside changes,the smart home will adjust the temperature levels inside.The computer will also close the blinds when it gets dark or to stop s
14、o much sun from entering a room.And if you want to eat when you get home,the computer will turn the oven on for you!Are computers taking over our lives In a survey,44 per cent of young people between 11 and 16 said their PC was a trusted friend.Twenty per cent said they were happier at their compute
15、r than spending time with family or friends.Another survey found that people in Britain spend so much time on the phone,texting and reading emails that they no longer have time for conversation.What do you think about that Unit 6-Listening in News Report US Scientists have announced the discovery of
16、 gravitational waves,which are tiny waves produced by massive objects moving very quickly.Two black holes produced the waves when they crashed into each other about billion years ago.A black hole is a place in space where the gravity is so strong that even light cannot escape.This announcement of th
17、e discovery comes a century after Albert Einstein first predicted gravitational waves would exist.The discovery was made possible by using a highly sensitive instrument designed to detect signals of gravitational waves and identify their sources.This discovery proves that there are gravitational wav
18、es,and strongly confirms the existence of black holes.With this discovery,scientists are given a new tool to study and understand the universe.The waves could help scientists learn more about what happened immediately after the universe began and how the universe expanded.Scientists hope that they m
19、ay be able to observe parts of the universe that were previously undetectable.1.What discovery have US scientists made 2.What features do black holes have according to the news report 3.Why is the discovery important Passage 1 When you have a biscuit with your cup of tea,do you dunk it And if so,wha
20、ts the perfect way to do it Thats the subject of todays Science in Action report.It may be hard to believe but scientists at the University of Bristol have been analyzing this question.And after a two-month study they devised a mathematical formula for dunking biscuits.So no more melting chocolate,o
21、r biscuit crumbs in the bottom of your cup,which is the fate of one in four biscuits that are dunked in tea,according to research by a biscuit manufacturer.Doughnut dunkers dont face the same problems because doughnuts are held together with an elastic net of protein,gluten.This substance allows the
22、 doughnut to absorb liquid without breaking down its structure.The structure of a biscuit,however,is held together by sugar which melts when placed in hot tea or coffee.So what is the answer The researcher,let by Dr.Len Fisher,discovered that holding the biscuit in a horizontal position or“flat-on”h
23、as a significant effect on the amount of time that a biscuit can stay in hot liquid before falling apart.In fact this horizontal dunking results in a dunking time up to four times longer than traditional vertical dunking.Whats the reason for this It seems that the answer is related to diffusion,in o
24、ther words,the length of time it takes for the liquid to penetrate the structure of the biscuit.Basically,it takes longer for the liquid to travel through the channels of a biscuit when it is laid flat on the surface of the liquid.Also the fact that when a biscuit is dunked horizontally,with the bis
25、cuit submerged in the liquid,and the chocolate coating staying out of the liquid,the chocolate helps hold the biscuit together.Another factor influencing the equation is the temperature of the tea the hotter the tea,the faster the sugar melts.Researchers also found that by dunking a biscuit into tea
26、 or coffee,up to ten times more flavor is release than it the biscuit is eaten dry.So its worth experimenting yourself.If you are wondering how you can perfect the horizontal dunk,the researchers have come up with an idea for a biscuit-holding device to make dunking biscuits easier.They are even mow
27、 working on producing a table giving guidelines on dunking times for different types of biscuit.On that note,I think its time to go off to the canteen for a tea break!Passage 2 Peter:Hey Louise,look at this book about crop circles-some of the photos are absolutely unbelievable.Louise:You don t belie
28、ve in all that stuff,do you Peter Peter:Im not saying I believe in UFOs and things,but some of the formations are fascinating.Theyre made up of lots of interconnected circles and geometrical shapes.You know,in the past few years,there have been more reports of them.The circles are getting larger and
29、 the designs are getting more intricate.Im sure that they cant all be man-made.Think about it-theyre so complicated,and they appear at night in the middle of fields of wheat barley or corn.Its definitely pretty weird!Louise:I know,but l saw a TV documentary about it,and they showed how a group of ho
30、axers made an elaborate crop circle in a field at night using wooden plank,ropes,plastic tubes and a garden roller.They even fooled some of the people who believe in the paranormal-aliens coming down in UFOs and aliens coming down in UFOs and creating them,and so on.Peter:Im sure lots of them are cr
31、eated by people just to get publicity but look here-it says,“The first records of crop circles go back as far as the 17th century.Since the 1970s there have been over 12,000 reports from countries all around the world including Italy,America,South Africa,Australia and Brazil.”Most reports are from h
32、ere in England though.Louise:But surely thats just because they get so much media coverage these days,so more people are making them.Peter:Perhaps,but how do you explain the fact that the actual chemical composition of the grains of corps inside the circles changes Scientific tests have found they h
33、ave a higher protein level.The stems of the grains have often been exposed to high temperatures.And they found that the soil within the circles contains more iron than the soil outside.So far,the hoaxers havent been able to copy all these features.Louise:Well,Im not a scientist but Im pretty sceptic
34、al about all these so-called paranormal explanations.I remember in the programme I watched,the researchers found signs of human interference,such as holes in the earth and footprints!Peter:Come on you must admit,that still leaves a lot which is unexplained!Louise:Theres lots of things that are hard to explain but this really.