新标准视听说七单元答案.doc

Unit 7 The secret life of scienceUnit overviewInside viewConversation 1Conversation 2 C1 is a conversation about Londons Science Museum and its Science Night. In C2 we learn more about the museums displays.Outside viewThe video clip is about the importance of computers in our daily lives and the possibility of smart houses becoming common.Listening inPassage 1Passage 2 P1 concerns some university research into biscuit dunking. P2 covers the strange phenomenon of crop circles.Presentation skillsRecalling things you have seen or readSs have to recall something they have heard or seen and interest others in it.PronunciationPronunciation of off and of intonation to attract attentionSense groups The unit covers the difference between of and off. Ss note how intonation is varied to attract attention. Ss can practice with pauses after sense groups. Inside viewConversation 1Example answers1 Probably a London science museum. (The picture shows Stephensons Rocket of 1829, an important early steam engine.)2 You can see old scientific objects, listen to talks and press buttons to see things happen.3 They need to have interesting activities and have a fun atmosphere.2Answers5-3-2-6-1-43Answers1(c)2(d)3(d)4(a)5(b)6(b)Conversation 2AnswersTopics actually mentioned are: steam engines, electricity, space rockets, satellites, computing, scientific experiments, agriculture, history of flight and telescopes.5Answers1 Its got everything to do with science.2 She thinks it sounds fascinating.3 At the museum.4 She tells him Andy and she are going to spend the night together.5 Joe is surprised and confused.6Answers(1) Why is it so special(2) I suppose this is(3) have special exhibitions for kids(4) The first thing you have to do(5) were really gonna stay the night(6) While youre getting(7) where are you two off toOutside view3AnswersUses of computers include: to provide travel updates, to operate trains, to analyze evidence, to control buildings, to switch on lights, to provide entertainment, to control the temperature and to close blinds.Places where computers are used include: homes, police stations, libraries and schools.4Answers1(a)2(d)3(c)4(a)5(d)5Answers(1) areas of life(2) in our homes(3) computer-controlled houses(4) adjust the temperature(5) give new instructions(6) react to match(7) TV and Internet(8) outside changes(9) stop too much sun from entering(10) turn the oven on7Example answersComputers play a major role in the daily lives of people in Britain. They are important for the operation of the transport network, assist the police in their duties, and control many buildings. The young are very keen on computers, particularly enjoying computer games, their number one leisure activity.Soon computers may even run the homes of ordinary people. In smart homes a central computer, which can be accessed through a mobile phone, will control temperatures, maintain security, and operate electrical appliances throughout the building. Blinds will be lowered or raised depending on the amount of light and it will be possible to have dinner waiting for one when one gets home after work.This worries some people who think the British spend too much time on their electronic devices, but the young are happy to treat their computers even as friends.Listening inPassage 1Listening and understanding2Answers1 Scientists at the University of Bristol carried out a two-month study to find the best way to dunk a biscuit.2 About one in four biscuits break up when dunked.3 Unlike biscuits, doughnuts are held together by protein gluten which doesnt break down in hot liquids.4 Horizontally dunking a biscuit into tea allows a longer dunking time, as the liquid takes longer to soak into it.5 The hotter the tea the faster the biscuit breaks up.6 Dunking a biscuit in a hot drink releases up to ten times more flavour than eating the biscuit dry.3Answers41 dunking biscuits2 held together3 absorb liquid4 travel through5 hold the biscuit6 producing a tableDeveloping critical thinking4Example answers1 Yes, I find it fascinating to learn of this strange custom. I mut try it myself. It seems it really makes biscuits taste better!2 I think he is a regular biscuit-dunker but kept on losing half his biscuit so he wanted to find out how he could avoid pleasure to disaster!3 Well, it cannot have cost much and it might give pleasure to a lot of people so why not do it?4 Now we are getting serious. of course, research into food and health is far more important.5Answers1 I really do not know it looks as if it might be something to do with the moon and its phases but why is it in a field?2 Crop circles this is farmland, isnt it? The circles are made in a field of wheat? I dont think I know anything about this.3 Do they use agricultural equipment?4 Oh, look at them they must be man-made. How else could such tidy patterns appear in a field?5 Why do people make them? Or is there some secret I dont know about?Listening and understanding6AnswersThe statements said by Peter are: 1, 2, 4, 6 and 8.The statements said by Louise are: 3, 5 and 7.7Answers1(b)2(b)3(d)4(a)5(c)6(a)Pronunciation1Answers sciencescientific energyenergetic historyhistorical electricityelectrical agricultureagricultural exhibitexhibition5AnswersPerhaps, / but / how do you explain the fact / that the actual chemical composition / of the grains of crops inside the circles changes? / Scientific tests / have