The world itself is becoming much smaller by using modern traffic and modern communication means (通讯设备). Life today is much easier than it was hundreds of years ago, but it has brought new problems. One of the biggest problems is pollution. To pollute means to make things dirty. Pollution comes in many ways. We see it, smell it, drink it and even hear it.
Man has been polluting the earth. The more people, the more pollution. Many years ago, the problem was not so serious because there were not so many people. When the land was used up or the river was dirty in one place, man moved to another place. But this is not helpful. Man is now slowly polluting the whole world.
Air pollution is still the most serious. It’s bad for all living things in the world, but it is not the only one kind of pollution. Water pollution kills our fish and pollutes our drinking water. Noise pollution makes us angry more easily.
Many countries are making rules to fight pollution. They stop people from burning coal(煤)in houses and factories in the city, and from putting dirty smoke into the air. Pollution by SO2 is now the most dangerous kind of air pollution. It is caused(引起)by heavy traffic. We are sure that if there are fewer people driving, there will be less air pollution.
The earth is our home. We must take care of it. That means keeping the land, water and air clean. Also, we must take care of the rise in pollution at the same time.
________, our world is becoming much smaller.
| A．Because of the rise in pollution |
| B．Because of modern traffic and modern communication means |
| C．Because the earth is being polluted day and night |
| D．Because the earth is blown away by the wind every year |
Hundreds of years ago, life was ________it is today.
| A．much easier than | B．as easy as |
| C．much harder than | D．as hard as |
The writer thinks that pollution makes us angrymore easily.
| A．air | B．noise | C．rubbish | D．water |
According to the passage, which statement is true?
| A．The more people, the less pollution. |
| B．Air pollution is the only one kind of pollution. |
| C．If there are fewer people driving, there will be less air pollution. |
| D．We should not use modern traffic and modern communication any more. |
Some girls are talking about their dreams. They want to do different jobs when they grow up.
The first girl says, "When I grow up, I want to work with animals. I like them and they are so cute."
The second girl says, "Oh, Mary, I think it's boring to be with animals, because they can't speak. I want to be a reporter, so I can meet and talk to interesting people every day,"
The third girl says, "Jodie, I don't think it's a difficult job for you, because you are good at talking with others. I want to be a policewoman, because my mom is one."
The last girl says, "I like your mother's job, Sarah. I am writing a story about that job. My mother says I can be an author (作家). But I want to be a doctor, because I like helping others."girls are talking about their dream jobs.
| A．Three | B．Four | C．Five | D．Six |
What does Jodie want to be?
| A．A reporter. | B．A policewoman. |
| C．A doctor. | D．An author. |
What does the last girl want to be?
| A．A reporter. | B．A policewoman. |
| C．A doctor. | D．An author. |
Why does Sarah want to be a policewoman?
| A．Because she can meet and talk to interesting people every day. |
| B．Because she is good at talking with others. |
| C．Because she likes helping people. |
| D．Because her mother is a policewoman. |
What kind of the job is not mentioned?
| A．A doctor. | B．A breeder (饲养员). |
| C．A teacher. | D．A reporter. |
请阅读下列短文。根据短文内容从每题所给的A、B、C、D四个选项中选出最佳选项。(每小题2分)
| Henry |
I like dogs. They are so cute. They play with us. How happy! |
| Julia |
I don't like dogs. Because they are scary. Some dogs hurt people. |
| Nancy |
Dogs are helpful! They help people with many things. Some dogs help do the housework. |
| Andrew |
I like dogs. They are clever. But my mother dislikes them. She thinks they are noisy. She only likes quiet and small animals. |
Who dislikes dogs?
| A．Henry. | B．Nancy. | C．Andrew. | D．Julia. |
How many kids like dogs?
| A．One. | B．Two. | C．Three. | D．Four. |
We can send to Andrew's mother.
| A．a dog | B．a rabbit |
| C．a tiger | D．a panda |
What kind of animals does Andrew's mother like?
| A．Cute animals. | B．Friendly animals. |
| C．Beautiful animals. | D．Quiet animals. |
Who has the same likes?
| A．Henry and Nancy. | B．Nancy and Julia. |
| C．Andrew and his mother. | D．Julia and Andrew. |
No one call change the weather．Nobody can control the weather．But if we read correctly the signs around us，we can tell what the more important changes in the weather will be．This way of telling what the weather will be like on the following day or two is called weather forecasting．
For many centuries and in all countries，people have studied the weather and tried to make weather forecasting．Rings around the sun are a sign of coming rain．Many people feel in their bones the coming of wet weather, their joints hurt．Some birds fly high if fine weather is coming，but they fly near the ground if rainy or stormy weather is on the way．If you see a rainbow during rainy weather, this is a sigh that the weather will become clear and fine．Such rainbows come in the evening．If the stars twinkle clearly at night，then fine weather will continue．If a fog appears in the morning just above a river, then the day will be warm．If the sunset is mostly red in colour, then the following day will be fine．If a rainbow appears in the morning，rainy weather will probably come．Most of the above saying have been made by the people who have used their eyes and brains to make weather forecasting。People’s joints ache．
| A．is a sign of coming rain | B．without any reason |
| C．because they are ill | D．because of the insects |
Which is true about weather forecasting?
| A．Weather forecasting is a report about the weather． |
| B．Weather forecasting is a way of telling what the weather will be like． |
| C．Weather forecasting is a sign of coming rain． |
| D．People Can change the weather． |
The birds fly high and the stars twinkle clearly is a sign that the weather will．
| A．be warm | B．be rainy |
| C．be clear and fine | D．be cold |
We mustto make weather forecasting．
| A．use our eyes and brains | B．study the weather hard |
| C．read correctly the signs | D．all of the above |
Every object has weight．But the center of its weight is not always in the middle of the object．If the top of ail object is heavier than its bottom (底部)，it will fall over easily．We say that its center of gravity (重力) is high．But if the bottom is heavier, it won’t fall easily, Then we say that its center of gravity is low．
Look at the first picture．This empty box must fall over, because its center of gravity (C) is not above the line of its bottom (AB)．
Now look at the second picture．There is some heavy iron (铁) in the bottom of this box．It will not fall，because its center of gravity is above its bottom．
If the bottom of an object isits top，it will fall over easily．
| A．1ighter than | B．heavier than |
| C．no heavier than | D．as heavy as |
Please point out which box will not fall．
The reason why the Leaning Tower of Pisa does not fall is that．
| A．the top of the tower is heavier than its bottom |
| B．the bottom of the tower is not heavier than its top |
| C．its center of gravity is still above the line of its bottom |
| D．its center of gravity is not above the line of its bottom |
In most parts of the world，many students help their schools make less pollution．They join“environment clubs”．In an environment club，people work together to make our environment clean． Here are some things students often do．
●No-garbage (垃圾) lunches．How much do you throw away after lunch? Environment clubs ask students to bring their lunches in bags that can be used again．Every week they will choose the classes that make the least garbage and report them to the whole school!
●No-car day．On a no—car day, nobody comes to school in a car—not the students and not the teachers! Cars give pollution to our air, so remember：
Walk，jump，bike or run．
Use your legs! It’s lots of fun!
●Turn off the water! Did you know that some toilets can waste (浪费) twenty to forty tons of water an hour? In a year, that would fill a small river! In environment clubs，students mend those broken toilets．
We love our environment．Let’s work together to make it clean．Environment clubs ask students．
| A．to run to school every day |
| B．to take exercise every day |
| C．not to forget to take cars |
| D．not to throw away lunch bags |
On a no-car day, will take a car to schoo1．
| A．both students and teachers | B．only students |
| C．neither students nor teachers | D．only teachers |
After students mend toilets，they save．
| A．a small river | B．a club |
| C．a lot of water | D．a toilet |
The writer wrote the passage to ask students to．
| A．clean schools | B．make less pollution |
| C．join clubs | D．help teachers |