20.Today just as technology changed the face of industry,farms have undergone an"agricultural revolution".On the farm of today,machines provide almost all the power.
One of the most important benefits will be the farm computer.A few forward-looking farmers are already using computers to help them run their farms more efficiently.The computers help them keep more accurate records so they can make better decisions on what crops to plant,how much livestock to buy,when to sell their products,and how much profit they can expect.Many computer companies have been developing special computer programs just for farmers.Programs are being written for hog producers,grain farmers,potato farmers,and dairy farmers.In the future,farmers will be able to purchase computer programs made to their needs.Because of the growing importance of computers on the farm,students at agricultural colleges are required to take computer classes in addition to their normal agricultural courses.There can be no doubt that farmers will rely on computers even more in the future.While the old-time farm depended on horse power,and modern farms depend on machine power,farms of the future will depend on computer power.
Another technological advance which is still in the experimental stage is the robot,a real"mechanized hired hand"that will be able to move and,in some ways,think like a human being.Agricultural engineers believe that computer-aided robots will make startling changes in farming before the end of the century.Unlike farmers of the present,farmers of the future will find that many day-to-day tasks will be done for them.Scientists are now developing robots that will be able to shear sheep,drive tractors,and harvest fruit.Even complex jobs will be done by robots.For example,in order to milk their cows,farmers must first drive them into the barn,then connect them to the milking machines,watch the machines,and disconnect them when they are finished.In the future,this will all be done by robots.In addition,when the milking is completed,the robots will automatically check to make sure that the milk is pure.The complete mobilization of the farm is far in the future,but engineers expect that some robots will be used before long.
62.According to the passage,computers can NOT help farmers decideA.
A.what livestock to raise
B.whether to plant a certain kind of crop
C.how much money they can earn from their products
D.when to sell their products
63.Which of the following statements is true?C
A.Farmers in the future will depend totally on computers.
B.Both computers and robots have been in use on today's farms.
C.Farmers mainly use machines on their farms at present.
D.Students at agricultural colleges must take computer classes because they can do nothing without the help of computers on today's farms.
64.According to the engineers,Cwill be done by robots in the near future.
A.all farm workB.milking cows
C.most of the farm workD.some farm work
65.What is the best title for the whole passage?B
A.Computer,Farmers'Best FriendB.The Agricultural Revolution
C.Farmers in The FutureD.Computers and Robots.
16.Nuclear power's danger to health,safety,and even life itself can be summed up in one word:radiation.
Nuclear radiation has a certain mystery about it,partly because it cannot be detected by human senses.It can't be seen or heard,or touched or tasted,even though it may be all around us.There are other things like that.For example,radio waves are all around us but we can't detect them,sense them,without a radio receiver.Similarly,we can't sense radioactivity without a radiation detector.But unlike common radio waves,nuclear radiation is not harmless to human beings and other living things.
At very high levels,radiation can kill an animal or human being immediately by killing masses of cells in vital organs.But even the lowest levels can do serious damage.There is no levels of radiation that is completely safe.If the radiation does not hit anything important,the damage may not be serious.This is the case when only a few cells are hit,and if they are killed immediately,your body will replace the dead cells with healthy ones.But if the few cells are only damaged,and if they reproduce themselves,you may be in trouble.They can grow into cancer.Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation.Serious damage can be done without the victim being aware at the time that damage has occurred.A person can be irradiated(辐射)and feel fine,then die for cancer five,ten,or twenty years later as a result.Or a child can be born weak as a result of radiation absorbed by its grandparents.
Radiation can hurt us.We must know the truth.
39.What is the main idea of the passage?C
A.How to detect nuclear radiation.
B.How radiation kill a man.
C.The mystery about nuclear radiation.
D.Serious damage caused by nuclear radiation.
40.Which of the following statements is true?A
A.Nuclear radiation can cause cancer to human beings.
B.Nuclear radiation can be safe to human beings if its level is low.
C.Nuclear radiation can be detected by human senses.
D.Nuclear radiation is just like common radio waves.
41.What is not the reason why nuclear radiation has a certain mystery?C
A.The hurt cells can stay in the body many years and then grow into cancer.
B.It can do harm to a person while the victim isn't aware the damage
has occurred.
C.Nuclear radiation can kill a person very easily.
D.Radiation can seldom kill a person immediately.
42.If a human being is hit by nuclear radiation,he mayD.
A.die of cancer after many years          B.die immediately
C.have a child who may be born weak D.all of the above.
13.It was Thanksgiving morning.I was busy preparing the traditional Thanksgiving turkey when the doorbell rang.I opened the front door and saw two small children in rags huddling together on the top step.
"Any old papers,lady?"asked one of them.
I was busy.I wanted to say"no"until I looked down at their feet.They were wearing thin little sandals(凉鞋),wet with heavy snow.
"Come in and I'll make you a cup of hot cocoa."
They walked over and sat down at the table.Their wet sandals left marks upon the floor.I served them cocoa and bread to fight against the cold outside.Then I went back to the kitchen and started cooking.
The silence in the front room struck me.I looked in.The girl held the empty cup in her hands,looking at it.The boy asked in a flat voice,"Lady,are you rich?"
"Am I rich?Pity,no!
I looked at my wornout slipcovers(椅套).The girl put her cup back in its saucer(茶碟)carefully and said,"Your cups match your saucers."They left after that,holding their papers against the wind.They had reminded me that I had so much for which to be grateful.
Plain blue china cups and saucers were only worth five pence.But they matched.
I tasted the potatoes and stirred(搅动)the meat soup.Potatoes and brown meat soup,a roof over our heads,my man with a regular job,these matched,too.
I moved the chairs back from the fire and cleaned the living room.The muddy marks of little sandals were still wet upon my floor.Let them be for a while,I thought,just in case I should begin to forget how rich I am.
56.Which of the following would be the best title for the text?B
A.Lady,are you rich?
B.A story of Thanksgiving Day
C.Don't forget how rich you are  
D.Does cups and saucers match well?
57.The writer let the two children come in and served them well becauseC.
A.she wanted to sell old papers to them
B.she wanted to invite them to her Thanksgiving party
C.she showed great pity and care on them
D.she had the same experience as them in the past
58.Which of the following statements is NOT true according to the passage?A
A.The girl thought the writer was rich just because she wanted to make the writer happy.
B.The writer had thought she wasn't rich because her supplies were not expensive.
C.If cups and saucers match well,they are a best pair even though cheap.
D.After hearing what they said,the writer seemed to understand what a rich life was.
59.The writer left the muddy marks of little sandals on the floor for a while toB.
A.show that she was a kindhearted lady
B.remind her that she shouldn't forget how rich she was
C.leave room for readers to think about what being rich is
D.prove that she had understood what meant being rich.
12.One of the most striking findings of a recent questionnaire in the UK is that of the people interviewed,one in two believes that it is becoming more difficult to meet someone to start a family with.
Why are many people finding it increasingly difficult to start and keep close relationships(关系)?Does modern life really make it harder to fall in love?Or are we making it harder for ourselves?
It is certainly the case today that nowadays couples benefit in different ways from relationships.Women no longer rely upon partners for economic security(安全性)or status.A man doesn't expect his wife to be in sole(唯一的)charge of running his household and raising his children.
But perhaps the knowledge that we can live perfectly well without a partnership means that it takes much more to persuade people to give up their independence.
In theory,finding a partner should be much simpler these days.Only a few generations ago,your choiceof soul mate was limited by geography,social customs and family tradition.Although it was never clear,many marriages were essentially arranged.Now those barriers have been broken down.You can approach a builder or a doctor in any bar in any city on any given evening.When the world is your oyster(牡蛎),you surely have a better chance of finding a pearl.
But it seems that the traditions have been replaced by an even tighter restriction:the limitation of choice.The expectations of partners are made greater to an unmanageable degree:good looks,impressive salary,kind to grandmother,and so on.There is no room for error in the first impression.
We think that a relationship can be perfect.If it isn't,it is intended to be thrown away.We work to protect ourselves against future heartache and don't put in the hard emotional labor needed to build a strong relationship.Twelve-hour work at the office makes relaxed after-hours dating(约会) difficult.The cost of housing and child-raising creates pressure to have a stable(稳定的)income and career before a life partnership.
57.Nowadays,in a family,B.
A.men begin to depend on womenB.couples share the burdens
C.men are responsible for houseworkD.couples can't get along together
58.People don't want to give up their independence becauseD.
A.they can't bear arranged marriagesB.they want to have more choices
C.they don't want to follow traditionsD.they think they can live happily alone
59.People are not eager to date becauseB.
A.it requires luck to build a strong relationship
B.it takes them too much energy to work
C.it needs faith(信心)to have a life partnership
D.it causes mental problems to find a life partner
60.Which of the following can best describe the main idea of the passage?A
A.The expectations of partners and financial (经济的)pressure may prevent a relationship.
B.People should spend more money on marriage today.
C.Independence is much more important than love.
D.Even a perfect marriage can be given up for the sake of independence.
11.Rainforest is home to around twothirds of all plant and animal species found on land-in addition to millions of people who depend on them for survival-our remaining ancient forests are some of the most diverse ecosystems known to science.They are also very important to the health of our planet,especially when it comes to regulating(调节)the climate.But ancient forests around the world are under attack.
Protecting rainforests is on the global agenda(议事日程)in a big way.Governments now recognize the importance of protecting tropical forests in order to avoid dangerous climate change,and there is now much debate(争论).As governments try to thrash out the details of a new international agreement,expected to be signed at the end of 2009,they are discussing how best to include measures to save rainforests,and therefore address one of the major causes of climate change.Worldwide,forest destruction causes more greenhouse gas emissions(排放) each year than do all the trains,planes and cars on the planet.So if we are to deal with global warming,there is an urgent need to find ways to reduce the 20% of global greenhouse gas emissions caused by forest destruction each year,and to keep the remaining forests standing.
We need to protect the planet's remaining forests not only to stop climate change from getting worse,but to ensure that we can stand the effects of global warming.Healthy forests take in and store quantities of carbon,helping to regulate temperature and generate rain.When they are destroyed,this carbon is let out into the atmosphere.Thus keeping forests standing is both an important part of regulating climate change and of adapting(适应) to a warmer world.
To date,most of the talk has focused on how to pay for reducing deforestation(滥伐森林),rather than on how to actually go about doing it.We believe governments need to support local people to protect their environment,as we have been showing for 20years can be a very effective way of saving rainforests.
54.The best title for the passage isA.
A.Rainforest and Climate Change
B.Strategies on Protecting Rainforest
C.Serious Deforestation to Rainforest
D.Present Situation of Rainforest
55.What does the underlined part"thrash out"in the second paragraph means?D
A.Try to understand.
B.Come up with.
C.Hide away.
D.Have a thorough discussion.
56.From the text we can learn that healthy forestC.
A.can keep us healthy and happy
B.can increase the effect from global warming
C.can be helpful in regulating the temperature
D.can give out large amounts of carbon.
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