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If there are _______ people driving, there will be ______ air pollution.
| A．more; less | B．less; fewer | C．fewer; more | D．fewer; less |
All students need to have good habits（好习惯）: When you have good study habits, you learn things quickly. You also remember them easily.
Do you like to study in the living room? This is not a good place because it is usually too noisy. You need to study in a quiet place, like your bedroom. A quiet place will help you only think about one thing, and you will learn better.
Before you begin to study, do not forget to clean your desk. A good desk light is important, too. You’ll feel tired easily if there is not enough light.
1.When you have good study habits, you will .
A．learn things quickly B．remember things easily
C．think about one thing D．both A and B
2.The living-room is not a good place for study because it is too .
A．quiet B．noisy C．good D．clean
3.You’ll feel tired easily if the light is .
A．good B．enough C．bad D．wonderful
4.You should remember to before you study.
A．clean the desk B．tidy the room
C．turn on the light D．go to the bedroom
5.The best title（标题） for this passage（文章） is .
A．Study in the bedroom B．Good study habits
C．How to study D．Desk light is important
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| 1 |  | A sign like this one means that there is a bike lane(车道). If there is such a sign，you are required to use the bike lane. If there is not such a sign, you should ride with traffic as far to the right side of the road as possible. |
| 2 |  | This signal means you can cross the street along with pedestrians(行人). It has a green picture of a oerson walking instead of using the word“walk”. |
| 3 |  | This signal is the “don’t walk”sign. It is a picture of a red hand, meaning you should stop. You should wait to cross the street until the green picture of the person walking is showing. |
| 4 |  | Car drivers and bikers must come to a complete stop at“STOP” signs. |
| 5 |  | A“YIELD”sign means to slow down and be ready to stop. If there are pedestrians or vehicles in or near the crossroad, you must stop. If there is no traffic in or near the crossroad and it is safe, you may go through. |
| 6 |  | This signal means you are coming to a zebra crossing. Car drivers and bikers must stop to allow people in the zebra crossing to cross the street. |
| 7 |  | When people are working on the roads, parts of the road are often dug up or rough(不平整的). Be careful when yon are cycling. Rough roads could make you fall off your bike. If you must move into the road to go around a work area，you should stop and look carefully to be sure there is no traffic coming. |
| 8 |  | A detour is a way of getting around a roadway that is closed. Roads are usually closed because of road work or dangerous conditions. If you must take a detour, be careful about the roads you aren’t used to. |
【小题1】What are cyclists required to do when they see the sign?
| A．To ride against traffic. |
| B．To ride on the left side of the road. |
| C．To ride on the bike lane. |
| D．To ride on the right side of the road |
【小题3】What should cyclists do when they see the sign?
| A．They should be careful when they cycle on the rough road. |
| B．They should take the rough road and fall off their bikes. |
| C．They should move into the road to go around a work area. |
| D．They should take another route instead of the closed roadway. |
When you look at a book，it sends some of the light which fails on it to your eyes，and you see the book．If light could be kept out from where you’re so that there would be no light from the book to reflect．Then you couldn’t see the book even with your eyes wide open．Light travels so fast that the time in which it travels from the book you’re reading to your eyes is as short as if there were no time at time．Light reaches us from the moon，which is about 380，000 kilometres away，in only a little more than a second．
【小题1】You can see the book because________．
| A．your eyes are close to it | B．it reflects some of the light |
| C．it has light of its own | D．it is big enough to be seen |
| A．闪光的 | B．看不见的 | C．发光的 | D．明亮的 |
| A．The moon | B．The earth | C．The sun | D．The satellite of Dong Fong Hong |
| A．300，000 | B．100，000 | C．400，000 | D．190，000 |
| A．All the things you can see give off light． |
| B．Light from the book is much faster than that from the moon． |
| C．The moment you open your eyes，the light from the book travels to your eyes． |
| D．Light travels so fast that there is no time for you to read． |
The population of the Earth is growing faster. It is important that we look after the Earth. We need it! The Earth gives us a lot of things. We also give the Earth a lot, but some of the things are not good.
In nature, when something dies, other animals and plants get food from it. Every animal or plant gives food for other animals or plants. However, animals can’t get food from many of the things that we ‘give’ the Earth. Animals and plants can’t eat metal, plastic and glass. These things will stay in the ground for many, many years.
Some rubbish is very dangerous for plants and animals. In some places, many animals live together. One animal makes food for many more animals. If we put rubbish and chemicals in the water, the plankton(浮游生物) can die. If there isn’t any plankton, many animals have nothing to eat.
So what can we do? Don’t leave any rubbish in the countryside! Don’t make so much rubbish!
1.The Earth gives us ___________.
A. food B. rubbish C. chemicals D. pollution
2.When something dies in nature, _________.
A. water and grass are polluted B. plastic and wood become food
C. other animals and plants get food D. metal and glass stay in the ground
3.We must _______ to look after the Earth.
A. put metal in the ground B. use more wood
C. keep frogs in the water D. make less rubbish
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