Book3 Unit 3

Unit 3The Million Pound Bank NoteⅠ.单项填空1．________ is known to everybody，the moon travels around the earth once every month.A．It B．As C．That D．What2．—Is Mr.Smith rich?—Yes，very rich.When he worked in ________ town，he earned a lot.Now he has a big farm in ________ country.A．a；the B．/；/ C．/；the D．the；/3．While watching Titanic，most people couldn’t help crying when it came to the scene________ Jack saves the girl’s life but dies in icy water himself.A．which B．asC．why D．where4．—Come in，please.Make yourself at home.—________—I’m glad you like it.A．Thanks.You have a nice place here.B．Oh，this picture is so beautiful.C．Thanks.What nice food you’ve prepared!D．OK.Let me look around your new house.5．It is said that the prisoners were________ to take two hours’ exercise a day.A．supposed B．permittedC．forbidden D．persuaded6．Wang Wei gave us a vivid ________ of her trip down the river.A．explanation B．ideaC．imagination D．account7．He is a heavy smoker，which makes all of us________.A．comfortable B．illC．pleasant D．sick8．April Fool’s Day is coming.Be careful not to be________ when others play tricks on you.A．brought in B．caught inC．taken in D．made in9．Would you please________this form for me to see if I’ve filled it in right？A．take off B．look afterC．give up D．go over10．—I believe you like the job.—________，I am tired of it.A．On the contrary B．On contraryC．On the other hand D．On other hand11．________any untrained actor，getting in front of the camera can be difficult.A．As far as B．As well asC．As long as D．As with12．I suddenly found myself________ down the street when I found two policemen in front of me.A．run B．runningC．runs D．ran13．________ you prefer，I’ll give it to you，but we haven’t any other models for you to choose from.A．Whatever B．WheneverC．However D．Whichever14．Why the explosion occurred was ________ the laboratory attendant had been careless.A．for B．becauseC．since D．that15．Excuse me，would you please tell me ________？A．when the sports meeting is taken placeB．when is the sports meeting going to be heldC．when is the sports meeting to beginD．when the sports meeting is to take placeⅡ.阅读理解A huge cloud of dust rose and an overpass disappeared.This was thescene in Zhuzhou，Hunan Province on May 17.Nine people were killedand 16 injured.Things were similar last year in the Sichuan earthquake.Thousands ofpeople were buried in the ruins and lost their lives.What if we could havewarned them?People are always racking_their_brains to find a way of preventing buildings’collapse.Better materials and technology help，but they are not a solution.Just like humans，a building has its own life cycle from “birth” to “death”．If we know when a building is going to collapse，we can repair it in advance or get out of it before it falls.Now，scientists at the University of Illinois have developed a material that turns red before it breaks.The invention could be used in things like climbing ropes or bridge supports.The research was led by Nancy Sottos，a professor at the university’s Beckman Institute，and Douglas Davis，a graduate research assistant.The secret behind the color-changing material is a type of molecule (分子)．A molecule is a group of atoms held together by chemical bonds.Imagine you and your friends standing in a circle，holding hands.Each person stands for one atom，your hands represent the bonds，and the entire circle represents a molecule.If one person lets go of his or her hands，the molecule changes color.The research team put the molecule into a soft material.When the researchers stretched the material，it turned bright red for a few seconds before it broke into two pieces.When they repeatedly stretched and relaxed the material，without breaking it，it only turned a little red.The major problem is that light can get rid of the red color.When the team shone bright light on the molecule，the broken bond was fixed，and the color disappeared.If the bright light keeps the red color from appearing，the material’s warning system will be useless.Scientists still have a lot of work to do before the color-changing molecules can be used outside the lab.16．What does the passage mainly introduce?A．The collapse of an overpass in Zhuzhou，Hunan Province.B．The Sichuan earthquake last year.C．A material that turns red before it breaks.D．A way of preventing building from collapsing.17．The underlined words “racking their brains” in the third paragraph mean ________.A．suffering a lotB．collecting beyond imaginationC．losing a lotD．thinking very hard18．Which of the following is a WRONG statement?A．Thousands of people died from the collapse of buildings in the Sichuan earthquake because they hadn’t been warned.B．There is no building that will never collapse.C．A new material has been applied to buildings to warn people of collapse.D．A color-changing material can turn red before it breaks.19．What is the major problem in the research of the color-changing material?A．Bright light can get rid of the red color.B．When the material is relaxed，the color disappears.C．The material’s warning system is useless.D．The molecules only change color in the lab.20．What can we infer from the passage?A．The color-changing molecules are certain to be used outside the lab.B．There will be no collapse with the help of the color-changing material.C．There is a long way to go before the material can be applied.D．The problem caused by bright light will be solved by scientists.Ⅲ.短文改错I still remember my middle school life in Tianjin yet.I was then in a school for student from Tibet.As we were all left home at early age，we met lots of problems in our daily life.We had to do the washing，cleaning and shopping by us.However，we seldom felt lonely or helplessly.We enjoyed our happy life.At weekends，we would play basketball，swimming in the pool or go for a picnic.We were living in a big family.We treat each other as brothers and sisters.If any one of us had any difficulty in our life and study，the other would help him out.It has been five years when we graduated，but those memories are as sweet as ever before.1.B2.C3.D4.A5.B6.D7.D8.C9.D 10.A 11.D 12.B 13.A 14.D15.D 16.C 17.D 18.C 19.A 20.CⅢ.短文改错I still remember my middle school life in Tianjin yet\.I was then in a school for student studentsfrom Tibet.As we were\ all left home at ∧an early age，we met lots of problems in our dailylife.We had to do the washing，cleaning and shopping byusourselves.However，we seldom feltlonely or helplesslyhelpless.We enjoyed our happy life.At weekends，we would play basketball，swimmingswim in the pool or go for a picnic.We were living in a big family.Wetreattreated each other asbrothers and sisters.If any one of us had any difficulty in our life and study，the other others wouldhelp him out.It has been five years whensince we graduated，but those memories are as sweet as everbefore.。