1、any longer.However,this reality also worried my designers. As time went by,I was made smaller .First as a PC(personal computer)and then as a laptop,I have been used in offices and homes since the 1970s. These changes only became possible as my memory improved.First it was stored in tubes,then on tra
2、nsistors and later on very small chips.As a resultI totally changed my shape .As I have grown older I have also grown smaller .Over time my memoryhas developed so much that ,like an elephant,I never forgrt anything I have been told !And my memory became so large that even I couldnt believe it!But I
3、was always so lonely standing there by myself,until in the 1960s they gave me a family connected by a network .Iwas able to share my knowledge with others through the World Wide Web. Since the 1970s many new applications have been found for me .I have become very important in communication,finance a
4、nd trade I have also been put into robots and used to make mobile phones as well as help with medical operations.I have even been put into space rockets and sent to explore the Moon and Mars .A nyhow, my goal is to provide humans with a life of high quality.I am now truly filled with happiness that
5、I am a devoted friend and helper of the human race ! ANDYTHE ANDROID Im part of an an android football team .About once a year we are allowed to get together to play a game of football.Im as big as a human .In fact ,I look like one too.On the footballteam Im a striker so I have to be able to run ver
6、y fast .My computer chips help me to mova and think like a human .For example ,I have learned to signal to my teammates in computer languages to give me the ball when I am open and have a good shot for a goal. My firat football competition was in Nagoya ,Japan several years ago .Last year our team w
7、ent to Seattle ,Washington in the USA.We won tsecong place .Personally ,I think the team that won firsy place cheated .They had developed a new type of program just before the competition.So we need to encourage our programer to improve our intelligence too.We are determined to create an even better
8、 system.In a way our programmet is like our coach.She programs us with moves to use if a new sitation arises.In this way I can make up new moves using my “artifical intelligence “.I would really like to play against a human team,for I have been programmed to act just like them.After all,with the hel
9、p of my electronic brain which never forgets anything ,using my intelligence is what Im all about! THE SPORTING ROBOT My name is Hua Fei and I am a sporting robot of the 23rd century.I am an expert at high flying exercises.I jump from spaceship and as I fall I turn,dive,circle and dance until I soft
10、ly land as close as I can to the finishing line.Robot competitions in the 23rd century are truly a popular sport.Fans from all over China watch their handheld TVs when a competition comes on.Last time I look part in the 78th Olympic on a flying island above Brussels in the sky.I won the siver medal
11、for my performance . This year I had the honour to be chosen again .I wanted to mmet robots from other countyies and explore ides about our sport.Hower ,my programmer fell ill the week before we were going to leave .It was very painful for her and I felt very frightened.I no longer felt so confident
12、 that I would win. The day of the competition was rather could for my legs and my special oil began to fteeze.I paused before I jumped from the starting place on a little spaceship but then I began my performance.At the correct moment I tried to open my parachute but there was a problem.It only open
13、ed a little .In stead of flying softly to earth I began to fall faster and faster so that I could not turn ,dive,circle or dance.My heart stopped beating as I landed heavily on a mountain covered with snow. This is why I am writing to you from my hospital bed with two broken legs and a fragile head.
14、I did not win anything at the Olympic after all.I need the factory to build me two new legs and an even bigger head.Then I will be able to compete once more .Lets hope foe greater success in the next Olympics! Unit 4 (1) How Daisy learned to help wildlife Daisy had always longed to help endangered s
15、pecies of wildlife.One day she woke up and found a flying carpet by her bed.“Where do you want to go?”it asked.Daiasy responded immediately.“Id like to see some endangered wildlife,”she said.“please take me to a distant land where I can find the animal that gave fur to make this sweater.”At once the
16、 carpet flew away and took her to Tibet. There Daisy saw an antelope looking sad.It said,“We are being killed for the wool beneath our stomachs.Our fur is being used to make sweaters for people like you .As a reasult,we are now an endangered species.”At that Daisy cried,“Im sorry I didnt know that.I
17、 wonder what is being done to help you.Flying carpet,please show me a place where theres some wildlife protection.” The flying carpet travelled so fast that next minute they were in Zimbabwe.Daisy turned around and found that she was being watched by an elephant.“Have you come to take my photo?”it a
18、sked.In relief Daisy burst into laughter.“Dont laugh,”said the elephant,“We used to be an endangered species.Farmers hunted us without mercy.They said we destroyed their farms,and money from tourists only went to the large tour companies.So the government decided to help.They allowed tourists to hun
19、t only a certain number of animals if they paid the farmers.Now the farmers are happy and our numbers are increasing.So good things are being done here to save local wildlife.” Daisy smiled.“Thats good news.It shows the importance of wildlife protection,but Id like to help as the WWF suggests.”The c
20、arpet Rose against and almost at once they were in a thick rainforest.A monkey Watched them as it rubbed itself.“What are you doing?”asked Daisy. “Im protecting myself from mosquitoes,”it replied.“When I find a milipede insect,I rub it over my body.It contains a powerful drug which affect mosquitoes
21、. You should pay more attention to the rainforest where I live and appreciate how the animals live together.No rainforest,no animals,no drugs.” Daisy was amazed.“Flying carpet, please take me home so I can tell WWF and we can begin producing this new drug.Monkey,please come and help,”The monkey agre
22、ed.The carpet flew home.As they landed,things begin to disappear.Two minutes later everything had gone-the monkey,too. So Daisy was not able to make her new drug.But what an experience!She had learned so much!And there was always WWF (2)Animal extinction Many animals have disappeared during the long
23、 history of the earth.The most famous of these animals are dinosaurs.They lived on the earth tens million of years ago,long before humans came into being and their future seemed secure at that time.There were many different kinds of dinosaur and a number of them used to live in china.The eggs of twe
24、nty-five species have been found in Xixia County,Nanyang,Henan province.Not long ago a rare new species of bird-like dinosaur was discovered in Country,liaoning Province.When scientists inspected the bones, they were surprised to find that these dinosaurs could not only run like the others but also
25、climb trees.They learned this from the way the bones were joined together. Dinosaurs died out suddenly about 65million years ago.Some scientists think it came after an unexpected incident when a huge rock from space hit the earth and put too much dust into the air.Others think the earth got too hot
26、for the dinosaurs to live on any more.Nobody knows for sure why and how dinosaur disappeared from the earth in such a short time. We know many other wild plants,animals,insects and birds have died out more recently.According to a UN report ,some 844 animals and plants have disappeared in the last 50
27、0 years.The dodo is one of them.It lived on the Island of Mauritius and was a very friendly animal.Please listen to a story of the dodo and how it disappeared from the earth. (3) The return of the milu deer My name is Linhui.I like to tell stories about people who work together.What is even better i
28、s when countries help each other and build a good friendship.An excellent example of this happened when Britain and China worked together to bring the Milu deer back to China. The Milu deer,a species with large horns,used to be common in China long ago.Like other deer they live together and eat gras
29、s and the soft parts of trees such as small branches.Milu deer were often hunted for food or sport in the past.The ,Ming and Qing dynasties did not protect them and many were killed.That is how the Milu deer disappeared from China. Luckily beforeany longer.However,this reality also worried my design
30、ers. As time went by,I was made smaller .First as a PC(personal computer)and then as a laptop,I have been used in offices and homes since the 1970s. These changes only became possible as my memory improved.First it was stored in tubes,then on transistors and later on very small chips.As a resultI to
31、tally changed my shape .As I have grown older I have also grown smaller .Over time my memoryhas developed so much that ,like an elephant,I never forgrt anything I have been told !And my memory became so large that even I couldnt believe it!But I was always so lonely standing there by myself,until in
32、 the 1960s they gave me a family connected by a network .Iwas able to share my knowledge with others through the World Wide Web. Since the 1970s many new applications have been found for me .I have become very important in communication,finance and trade I have also been put into robots and used to
33、make mobile phones as well as help with medical operations.I have even been put into space rockets and sent to explore the Moon and Mars .A nyhow, my goal is to provide humans with a life of high quality.I am now truly filled with happiness that I am a devoted friend and helper of the human race ! A
34、NDYTHE ANDROID Im part of an an android football team .About once a year we are allowed to get together to play a game of football.Im as big as a human .In fact ,I look like one too.On the footballteam Im a striker so I have to be able to run very fast .My computer chips help me to mova and think li
35、ke a human .For example ,I have learned to signal to my teammates in computer languages to give me the ball when I am open and have a good shot for a goal. My firat football competition was in Nagoya ,Japan several years ago .Last year our team went to Seattle ,Washington in the USA.We won tsecong p
36、lace .Personally ,I think the team that won firsy place cheated .They had developed a new type of program just before the competition.So we need to encourage our programer to improve our intelligence too.We are determined to create an even better system.In a way our programmet is like our coach.She
37、programs us with moves to use if a new sitation arises.In this way I can make up new moves using my “artifical intelligence “.I would really like to play against a human team,for I have been programmed to act just like them.After all,with the help of my electronic brain which never forgets anything
38、,using my intelligence is what Im all about! THE SPORTING ROBOT My name is Hua Fei and I am a sporting robot of the 23rd century.I am an expert at high flying exercises.I jump from spaceship and as I fall I turn,dive,circle and dance until I softly land as close as I can to the finishing line.Robot
39、competitions in the 23rd century are truly a popular sport.Fans from all over China watch their handheld TVs when a competition comes on.Last time I look part in the 78th Olympic on a flying island above Brussels in the sky.I won the siver medal for my performance . This year I had the honour to be
40、chosen again .I wanted to mmet robots from other countyies and explore ides about our sport.Hower ,my programmer fell ill the week before we were going to leave .It was very painful for her and I felt very frightened.I no longer felt so confident that I would win. The day of the competition was rath
41、er could for my legs and my special oil began to fteeze.I paused before I jumped from the starting place on a little spaceship but then I began my performance.At the correct moment I tried to open my parachute but there was a problem.It only opened a little .In stead of flying softly to earth I bega
42、n to fall faster and faster so that I could not turn ,dive,circle or dance.My heart stopped beating as I landed heavily on a mountain covered with snow. This is why I am writing to you from my hospital bed with two broken legs and a fragile head.I did not win anything at the Olympic after all.I need
43、 the factory to build me two new legs and an even bigger head.Then I will be able to compete once more .Lets hope foe greater success in the next Olympics! Unit 4 (1) How Daisy learned to help wildlife Daisy had always longed to help endangered species of wildlife.One day she woke up and found a fly
44、ing carpet by her bed.“Where do you want to go?”it asked.Daiasy responded immediately.“Id like to see some endangered wildlife,”she said.“please take me to a distant land where I can find the animal that gave fur to make this sweater.”At once the carpet flew away and took her to Tibet. There Daisy s
45、aw an antelope looking sad.It said,“We are being killed for the wool beneath our stomachs.Our fur is being used to make sweaters for people like you .As a reasult,we are now an endangered species.”At that Daisy cried,“Im sorry I didnt know that.I wonder what is being done to help you.Flying carpet,p
46、lease show me a place where theres some wildlife protection.” The flying carpet travelled so fast that next minute they were in Zimbabwe.Daisy turned around and found that she was being watched by an elephant.“Have you come to take my photo?”it asked.In relief Daisy burst into laughter.“Dont laugh,”
47、said the elephant,“We used to be an endangered species.Farmers hunted us without mercy.They said we destroyed their farms,and money from tourists only went to the large tour companies.So the government decided to help.They allowed tourists to hunt only a certain number of animals if they paid the fa
48、rmers.Now the farmers are happy and our numbers are increasing.So good things are being done here to save local wildlife.” Daisy smiled.“Thats good news.It shows the importance of wildlife protection,but Id like to help as the WWF suggests.”The carpet Rose against and almost at once they were in a t
49、hick rainforest.A monkey Watched them as it rubbed itself.“What are you doing?”asked Daisy. “Im protecting myself from mosquitoes,”it replied.“When I find a milipede insect,I rub it over my body.It contains a powerful drug which affect mosquitoes. You should pay more attention to the rainforest where I live and appreciate how the animals live together.No rainforest,no animals,no drugs.” Daisy was amazed.“Flying carpet, please take me home so I can tell WWF and we can begin producing this new drug.Monkey,please come and
