When people talk about air pollution, they are usually thinking about outdoor air 1 . But do you know that there is 2 air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of illnesses have 3 to do with polluted indoor air.
A lot of pollution comes from indoor activities 4 smoking and cooking. As most people 5 about 80-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.
Air pollution influences our health 6 . When the air is polluted, not only young children and old people suffer from it, 7 people with health problems suffer as well. Indoor air pollution can 8 people's eyes, noses and throats. Air pollution, both indoor and outdoor, can also lead to lung cancer（肺癌）and heart disease! In the great London fog in 1952, 4,000 people died in a few days 9 the pollution! 10 is said that half a million young children and women die each year in India because of indoor air pollution!
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Scientists are trying to make some small cars that may some day take the place of today’s big cars. If everyone drives such cars in the future, there will be 1_ pollution in the air. There will _2 be more space or parking cars in cities, and the _3_ will be less crowded. Three such cars can fit in__4__ that it is now needed for one car of the usual size.
The little cars will __5___ much less to own and to drive. Driving will be __6___, too, as these little cars can go only 65 kilometers per hour. The little cars of __7___ will be fine or getting out of the city, but they will not be useful for__8__ trips. Little cars which are powered by gasoline( 汽油 ) will go 450 kilometers __9___ needing to stop for more gasoline .
If big cars still are used together with the small ones, _10__ sets of roads will be needed in the future. Some roads will be used for the big, fast cars, and some roads will be needed for the slower, small ones.
A．much B．less C．small D．more
A．have B．also C．too D．less
A．spaces B．streets C．shops D．building
A．spaces B．the rooms C．the group D．the space
A．spend B．take C．cost D．pay
A．faster B．safer C．quick D．dangerous
A．today B．todays C．the past D．the future
A．short B．long C．any D．the shortest
A．after B．then C．before D．while
A．few B．two C．many D．little
Do you know why different animals or pests(害虫) have their special colors? Colors in them seem to be mainly used to 1 themselves.
Some birds like eating locusts(蝗虫), but birds cannot 2 catch them. Why? It is because locusts change their 3 with the change of the colors of crops. When crops are green, locusts look 4 . But as the harvest time comes, locusts change into the same brown color 5 crops have. Some other pests whose colors are 6 plants are easily found and eaten by 7 . So they have to hide themselves for lives and appear only 8 .
If you 9 animals’ life, you’ll find the main use of colors is to protect 10 . Bears, lions and other animals 11 quietly through forests. They cannot be easily seen by hunters 12 their colors are much like the trees.
Colors are useful not only on the land, but also in the 13 . A kind of fish can 14 a kind of black liquid(液体) when they face danger. The liquid spreads over quickly, so they cannot be found by their enemies and can quickly swim away. That is 15 they can live safely though they are not strong at all. So colors are really useful to animals.
A．show B．protect C．kill D．interest
A．easily B．freely C．safely D．differently
A．sizes B．smells C．colors D．shapes
A．yellow B．red C．black D．green
A．so B．as C．like D．with
A．different from B．same as C．similar to D．opposite with
A．other B．others C．the others D．another
A．in the morning B．at noon C．at night D．in the daytime
A．study B．write C．draw D．work
A．them B．themselves C．it D．itself
A．run B．fight C．move D．eat
A．because B．so C．and D．although
A．forests B．desert C．sea D．mountains
A．keep out B．come out C．look out D．give out
A．why B．when C．how D．where
We know 1 about the universe(宇宙). It means the earth, the sun, the moon, the stars, and the space 2 them.
Most of the stars are much 3 than the moon, but they look smaller 4 they are far away from the earth. At night, the moon is high in the sky 5 a light. But the moon has 6 light of its own. The light of the moon comes from the sun. The sun gives us light, heat and life. And the plants, animals and men will die 7 the sun.
The earth goes around itself 8 . When the part of the earth 9 to the sun, it is day. The 10 part of the earth is night.
The earth is our homeland. We should love it.
A．many B．a lot of C．much D．few
A．in B．between C．among D．with
A．farther B．nearer C．warmer D．bigger
A．because B．so C．but D．and
A．looks B．like C．looks like D．as
A．not B．no C．little D．less
A．with B．without C．in D．on
A．a long time B．in the daytime C．all the time D．take after time
A．turns B．gets C．points D．changes
A．front B．following C．opposite D．same
The earth is our home and we must take good care of it. That is to say we must 1 the land, air and water clean. But man 2 a lot of pollution on earth since he first made fire, washed his clothes in the river and threw rubbish on the ground. Many years ago, pollution was not so serious 3 there were not so many people.
There were enough 4 air, land and water. When the land or the river was dirty in one place, man moved to 5 place. Man is 6 the whole world now. So there is 7 enough clean air, nor clean land, nor clean water now. The more people there are in one place, 8 environment they maybe have.
Perhaps you are afraid 9 is endless(无休止的) for people to produce pollution.
10 , we are glad to tell you that people have come to know the danger of pollution. And you can find more and more people are working hard to protect our earth.
A．have B．take C．watch D．keep
A．produced B．has produced C．is producing D．will produce
A．so B．if C．because D．but
A．clean B．old C．dirty D．new
A．other B．the other C．another D．others
A．pollute B．polluting C．clearing D．clear
A．neither B．both C．either D．none
A．the worst B．the worse C．the bad D．worse
A．that B．this C．what D．it
A．Quickly B．Especially C．Luckily D．Anyway
We know that trees are useful in our everyday life. They 1 us many things, such as wood, oxygen(氧气), rubber, medicines and many other things. They can 2 tell us a lot about our climate. The following are the reasons. If you cut across a tree, you can 3 that it has many rings. Most trees grow one 4 ring every year. Because of this reason, we know 5 a tree is. A tree over a hundred years old means that it has more than a hundred 6 . When the climate is dry(干燥的) or very cold, the trees do not grow very much and their rings are usually 7 . When it is wet and 8 , the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the 9 changed suddenly. If we look at the rings on the trees, we can 10 about the climate for a hundred years. We can see how our climate is changing today.
A．give B．ask C．get D．tell
A．too B．as well C．either D．also
A．hear B．feel C．see D．look
A．new B．old C．young D．short
A．how tall B．how old C．how long D．how far
A．leaves B．apples C．rings D．trees
A．big B．thin C．thick(厚的) D．long
A．cold B．cool C．hot D．warm
A．climate B．things C．people D．life
A．think B．talk C．learn D．change
Pandas live in the forests and mountains of Southwest China. They mainly 1 bamboo, and each panda 2 a lot of bamboo every day. The area of bamboo is becoming smaller for many different 3 ,so pandas have 4 land to live 5 . Pandas don’t have many babies, and baby pandas often 6 . The situation is becoming very serious.
Our government is working hard to save pandas. There are more than 30 natures reserves to protect pandas but these are not enough. The government has made a new plan 7 pandas. The nature reserves will be bigger and the bamboo will grow 8 .Then the pandas will have enough food to eat and enough places to live in. Pandas born in the zoos may 9 live in the nature reserves.
Most people love pandas. The panda is one of the best-known 10 in the world. It is the symbol for the World Wide Fund for Nature.
A．live in B．live on C．live for D．live at
A．need eating B．needs eating C．need to eat D．needs to eat
A．causes B．excuse C．reasons D．result
A．fewer and fewer B．more and more C．less and less D．bigger and bigger
A．on B．in C．at D．into
A．dying B．die C．death D．dead
A．help B．helping C．to help D．helps
A．well B．better C．bad D．worse
A．goes back B．go back to C．go back D．goes back to
A．animals B．animal C．an animal D．the animals
We have no idea about 1 men first began to use salt. But we do know that it had been used in many different ways __2___ the history.
For example, in many history books it is __3__ that people who lived three thousand years ago __4__salted fish. Thousands of years ago in Egypt（埃及）, salt __5_ keep the dead. It can keep the dead bodies __6__ decay.（腐烂）
In the eighteenth century, a person who stole salt was __7__ to have broken the __8__. if a person was caught stealing salt, he would be thrown into __9__. Books also record that in England about ten thousand people were put into prison during that century _10__ stealing salt! In the year 1553, if a man took __11__ than his share of salt, he would be thought to have broken the law and would be __12__ punished(惩罚).
Salt was very __13__ on the dinner table of a king. It was always put __14__ the king when he sat down to eat. Then important visitors sat near the salt __15_ less important visitors were given seats farther away from it.
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A. serious B. bad C. terrible D seriously
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A. in the front of B behind C. in front of D. before
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Life in the 22nd century will be different from that in the 21st century because many changes will happen in the new century. 1_____ what will the changes be?
First, the population is growing very fast. There 2 more and more people in the world and most of them will live longer than before. Computers will be 3 smaller and more useful, and there will be 4 one in every home. And 5 studies will be one of the most important subjects in schools.
Second, people will work 6 hours than they are doing in the 21st century. They’ll have more free time for sports, watching TV and7 . Traveling will also be cheaper and easier. And more people will go to8 countries for holidays.
Third, there will be changes in our food, too. People will use more land to 9 new towns and houses. Then there will be less room for cows and sheep, so 10 will be more expensive. Maybe no one eat it everyday; 11 , they will eat more vegetables and fruit. Maybe people will be 12 .
Last, work in the future will be13 , too. Robots will do the 14 and hard work. Because of this, many people won’t have 15 work to do. This will be a problem.
A．But B．And C．However D．Or
A．will be B．will have C．are D．have
A．very B．quite C．much D．too
A．at most B．at least C．no more than D．less than
A．history B．English C．maths D．computer
A．less B．more C．fewer D．little
A．working B．traveling C．teaching D．staying
A．another B．the other C．other D．others
A．grow B．plant C．remain D．build
A．food B．meat C．vegetables D．fruit
A．however B．moreover C．instead D．although
A．healthy B．healthier C．health D．healthiest
A．dangerous B．difficult C．different D．the same
A．dangerous B．happy C．easy D．boring
A．more B．much C．many D．enough
Computer games are very popular. It is natural for people towant to 1 , so playing against a computer or against a friend on the computer can be 2 to stop . “Just one more game ,” often turns into another game , then another .
Computer games do have their 3 . They are excellent for training hand /eye coordination (协调). Surgeons(外科医生) who played computer games 4 children are often more practical . Computer games can also be 5 for teaching students. The students are open to learning while playing. They can study for longer than a 6 would be able to teach . Students can also learn at their own speed and not feel 7 to match classmates. And with computers you can 8 a task as many times as you like . The more you do this, the better you will get, 9 you can do it perfectly .
But like anything else in life, things should be 10 . Too much time on the computer can 11 your eyes . Regular breaks are needed. If students cannot 12 playing computer games , they won’t do as well in other areas in their life-not just schoolwork, 13 in developing important social skills such as how to talk with people and how to work with others as part of a 14 . And their health will become worse if they are 15 taking regular exercise.
Computer games have their place, but people must also remember it is important to have a balanced lifestyle.
A．win B．lose C．fight D．race
A．easy B．necessary C．difficult D．natural
A．rules B．advantages C．disadvantages D．mistakes
A．to B．between C．for D．as
A．good B．bad C．interesting D．necessary
A．teacher B．parent C．doctor D．computer
A．excited B．pleased C．stressed D．willing
A．make B．practice C．put off D．discover
A．when B．until C．after D．while
A．planned B．developed C．balanced D．discussed
A．break B．hurt C．relax D．close
A．enjoy B．start C．stop D．keep
A．family B．game C．match D．team
A．often B．no longer C．always D．still
One of the most remarkable things about the human mind is our ability to imagine the future. In our minds we can see what has not yet happened. For example, while we are looking forward to 1._____a new place or country, we 2._____what it will be like. We predict( 预料) the habit people will eat, dress and act. Of course, we do not always predict things 3._____. Things are often very different from the way we 4._____them to be.
One of the 5._____ dreams in history is the dream of the German scientist, Kekule, who had been 6._____ to work out a very difficult problem in physics. He had studied and analyzed(分析) the problem from every angle(角度) for days, but there 7._____ to be no way of 8._____ out the answer. Then one night he went to bed and dreamed. When he 9._____ up, he realized that he knew the answer. He had solved the problem in his 10._____.
The hypnotist(催眠者) sat in the chair opposite him and spoke 11._____: I want you to concentrate on my voice. Think about 12._____. You know nothing but my voice. And as you pay attention to my voice, your 13._____ will get heavier. Soon you’ll be asleep.
You will hear my voice and understand my words, but your body will be asleep, your eyes are too heavy. You are almost asleep, and when you wake up you will 14._____ nothing.
You will forget everything. Now I am going to 15._____ slowly from one to five. One, two, three, four, five.
A．visiting B．seeking C．reaching D．discovering
A．imagine B．know C．feel D．guess
A．quickly B．simply C．correctly D．neatly
A．required B．wished C．left D．expected
A．funny B．dull C．famous D．silly
A．managing B．trying C．thinking D．hoping
A．used B．ought C．seemed D．had
A．making B．finding C．turning D．letting
A．gave B．sat C．woke D．got
A．dream B．lesson C．research D．exercise
A．softly B．loudly C．slowly D．firmly
A．everything B．something C．nothing D．anything
A．eyes B．feet C．head D．body
A．accept B．remember C．hear D．receive
A．count B．say C．add D．speak
The Special Satellites
Man has invented four kinds of satellites. The first kind of satellite studies the__1__of the earth. They are used to make maps. They also help countries to see where they may__2___ oil or gold. The second kind of satellite is used to guide ships and planes. A ship or a plane can _3__a message to the satellite, and the satellite can find out __4___ the ship or the plane is.
The third kind studies the weather. These satellites_5__ the cloud and strong winds moving across the earth. They warn countries to make preparations when _6__ weather is coming.
___7__kind is used for communication. Telephone calls__8_countries can be sent by these satellites. Some can carry hundreds of calls at the same time. The call is sent to the satellites, then the __9__sends it to the station in the country and the country is being phoned. These satellites also carry pictures, they can receive and send __10__at a time, which we can watch on TV.
A．physics B．chemistry C．biology D．geography
A．carry B．find C．keep D．choose
A．write B．take C．send D．bring
A．where B．what C．which D．that
A．have B．watch C．notice D．see
A．sunny B．cool C．bad D．fine
A．The last B．Other C．One D．Another
A．among B．along C．between D．of
A．TV B．telegraph C．telephone D．satellite
A．plays B．programs C．films D．languages
I like movies best. Last week, I 1 a movie called ⅠRobot. It tells us a story about the future with robots. It is the year of 035 and people can see robots everywhere. Robots can help people do a lot of things, like looking 2 the old people or babies, washing, cooking, cleaning or taking dogs for a walk. Robot does everything people ask them to do 3 . But a policeman , 4 Spooner ,doesn’t like robots. Because he doesn’t think that people can live well 5 robots. One day a scientist kills himself. He leaves（留下） a robot. Some time later Spooner finds 6 wrong with the robots in the world. A 7 robots have their own thoughts(思想) and want to control(控制) the people. If the robots succeed（成功）, it will be very 8 for people. Susan is another scientist working on robots. Finally, Susan and Spooner decide to 9 together to fight against these robots. At last, they succeed. People control the robots again. I think the movie is very interesting. If you are 10 in it, why not go and see it?
A．watched B．watch C．saw D．see
A．at B．after C．for D．up
A．good B．nice C．well D．fine
A．name B．call C．calling D．called
A．and B．with C．without D．or
A．nothing B．anything C．something D．everything
A．little B．lot C．few D．lots
A．dangerous B．lucky C．danger D．exciting
A．worked B．working C．work D．works
A．interesting B．interested C．interest D．interests
Some people have very good memories(记忆力) and can easily learn quite long poem（诗歌） by heart. Some people have 1 memories and can only remember things that they have said again and again.
The 2 English writer Charles Dickens said that he could walk down 3 street in London and then tell you the name of every shop on 4 sides of the street. Great men in the world have wonderful memories.
A good memory is a great help in learning a language. Everybody learns 5 own language by remembering what he hears when he is a small child. Some children live with their parents in foreign（外国的） countries and they seem 6 two languages as easily as one. At school it is not so easy to learn foreign languages 7 students have little time for it and they are busy with other subjects as well.
A man's mind is quite like a camera but it 8 photos of what we see and it can also take photos of what we feel, hear, smell and taste. When we take a real photo with a camera, there is much work 9 before the photo is finished and ready to show to our friends. 10 the same way there is much work to do before we can keep a picture forever（永远）in our mind.
A．wonderful B．better C．poor D．badly
A．nice B．beautiful C．famous D．kind
A．much B．some C．many D．the
A．every B．each C．both D．all
A．her B．his C．one’s D．its
A．to keep B．to get C．to learn D．to take
A．because B．why C．what D．when
A．leaves B．takes C．gets D．receives
A．to do B．to have C．to start D．to stay
A．In B．On C．With D．As
As we all know, the environment around us is getting worse and worse. In some places we can’t see fish 1 in the river or trees on the hills. Some people even have no clean water to drink.
Recently, a new lifestyle called low carbon life is 2 every corner of our country. The meanings of low carbon are 3 energy and no waste. It is such an important project that I can’t wait 4 my ideas on how to promote it.
First，we should 5 a no-car day every week in our school. Because cars not only cause serious air pollution but also waste energy. 6 the no-car day, neither students 7 teachers are allowed to drive to school. At the same time，just walk or run. Use our 8 and enjoy the fun.
Second, we had better not use plastic bags 9 . No one can stand the “white pollution”， 10 it is wise to use cloth bags which can 11 again and again.
12 ，one thing 13 we should keep in mind is that every big thing comes from the small details. So, as students, we ought to turn 14 the lights the moment we leave, use 15 sides of the paper, and reuse our textbooks and so on.
All in all, it weighs greatly for all of us to put the low carbon lifestyle into practice. Just set our mind to these：no-car days, no plastic bags, and no waste. Let’s do it now.
A．swims B．swimming C．to swim D．swam
A．spreading B．moving C．living D．becoming
A．below B．high C．above D．low
A．to express B．express C．expressing D．expressed
A．set off B．set up C．put on D．put down
A．in B．at C．on D．with
A．nor B．or C．both D．and
A．foot B．cars C．buses D．legs
A．any more B．no more C．no longer D．never
A．because B．so C．but D．although
A．reused B．be used C．is used D．use
A．Finally B．Final C．Last D．Lately
A．who B．what C．that D．whose
A．up B．down C．on D．off
A．both B．each C．every D．all
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