Imagine the situation. You are driving a car along a desert or on a mountain. You have no idea        you are. You passed the last house two hours ago. Then your       breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a        with you. This invention may be able to help you. It is a device(装置) which uses satellites to find the user’s position(位置). It can find your position to within 20 metres. A GPS cannot start your car, but at least you will         where you are.

GPS, which means Global Positioning System, is a small        receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a        . We also find GPS devices in cars, planes, or boats. Some of these devices have electronic       , so you know where you are. For example, in a city they can tell you the name of the         .

There are       parts to the Global Positioning System. The first part is the     . You can either hold it in your hand      have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates(计算) its position. The third part of the system is a network of ground stations. They are all over the world. They       the satellites and make sure they are working well.

Some people think that in the future the GPS will be as        as the mobile. They are becoming       and more and more accurate(精确的). There are also new uses for the GPS. Perhaps they will become like       . Everyone will have one and you will never be lost again.

1.A.where                 B. what               C. who                  D. how

2.A.ship                B. car           C. train                  D. plane

3.A.watch         B. ring         C. clock                 D.GPS

4.A.advise                  B. know              C. represent             D. speak

5.A.radio          B. TV           C. robot                D. machine

6.A.room          B. office               C. road                  D. mobile phone

7.A.parts               B. maps                 C. video                D. music

8.A.studio         B. teenager     C. bus                  D. street

9.A. five            B. four                 C. three                D. two

10.A. sender             B. receiver      C. Internet      D. system

11.A.and               B. then         C. but           D. or

12.A.control              B. achieve       C. allow               D. imagine

13.A.expensive              B. special           C. new                  D. common

14.A. cheaper           B. easier              C. more expensive       D. bigger

15.A.computers             B. robots            C. satellites      D. watches

Imagine the situation. You are driving along a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down.   【小题1】 You have no mobile phone. What should you do? Well, next time take a GPS with you. This invention may be able to help you.   【小题2】  It can find your position to within 20 metres. A GPS cannot start your car, but at least you will know where you are.
GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone.  【小题3】  We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are.   【小题4】
Some people think that in the future the GPS will be as common as the mobile.   【小题5】  here are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again.

Put 2 February in your diary! It is World Wetlands Day! It marks the date that the
Convention(公约) on Wetlands was signed(签署)in1971.This special day was first celebrated in 1997 and it is celebrated every year.
The celebration is a call for action. It is a way to show people how important and
useful the wetlands are for people. On World Wetlands Day, people around the world take
part in many wetlands activities. People take trips to the local wetlands. There are talks
about how important the wetlands are. People get together to clean up their local wetlands
Children draw pictures to advertise the day. People also compete(比赛)in boat races.
The World Wetlands Day is important! If there are no wetlands, there will be no water for anyone in the future. Wetlands help protect nature and resources(资源)like fresh water. Already,  more than 10000 million people in the world do not have fresh water.
Many people do not know how important the wetlands are. They can understand why an
elephant or a tiger is important because they are big, beautiful animals. It is much harder for
them to understand how important the animals in the wetlands are. These small animals,
such as frogs and snails, play a very important part in keeping the balance of nature.
All plants and animals are part of the food chain(链).If the small wetlands animals
die, some animals in the food chain will have nothing to eat. They will also die. People
need the wetlands to keep the balance of nature in the world. If we do not protect nature
today，it will be gone tomorrow.
【小题1】What should you put in your diary?

Imagine the situation. You are driving along a desert or on a mountain. You have no idea where you are. You passed the last house two hours ago. Then your car breaks down. It is night and it is cold. You have no mobile phone. What do you do? Well, next time take a GPS with you. This invention may be able to help you. It is a device(装置) which uses satellites (卫星) to find the user’s position(位置). It can find your position to within 20 metres. A GPS cannot start your car, but at least you will know where you are.
GPS, which means Global Positioning System, is a small radio receiver. It looks like a mobile phone. You can hold it in your hand, or put in your pocket. It is sometimes put into a watch or a telephone. We also find GPS devices in cars, planes, or boats. Some of these devices have electronic maps, so you know where you are. For example, in a city they can tell you the name of the street.
There are three parts to the Global Positioning System. The first part is the receiver. You can hold it in your hand, or have it fixed into your car, plane, etc. The second part is a group of satellites orbiting the Earth. The receiver contacts at least four of the satellites and calculates(计算) its position. The third part of the system is a network of ground stations. They are all over the world. They control the satellites and make sure they are working well.
Some people think that in the future the GPS will be as common as the mobile. They are becoming cheaper and more and more accurate(精确的). There are also new uses for the GPS. Perhaps they will become like watches. Everyone will have one and you will never be lost again.
【小题1】According to the passage, with the help of the GPS, people __________.

Put 2 February in your diary! It is World Wetlands Day! It marks the date that the

Convention(公约) on Wetlands was signed(签署)in1971.This special day was first celebrated in 1997 and it is celebrated every year.

    The celebration is a call for action. It is a way to show people how important and

useful the wetlands are for people. On World Wetlands Day, people around the world take

part in many wetlands activities. People take trips to the local wetlands. There are talks

about how important the wetlands are. People get together to clean up their local wetlands

Children draw pictures to advertise the day. People also compete(比赛)in boat races.

    The World Wetlands Day is important! If there are no wetlands, there will be no water for anyone in the future. Wetlands help protect nature and resources(资源)like fresh water. Already,  more than 10000 million people in the world do not have fresh water.

    Many people do not know how important the wetlands are. They can understand why an

elephant or a tiger is important because they are big, beautiful animals. It is much harder for

them to understand how important the animals in the wetlands are. These small animals,

such as frogs and snails, play a very important part in keeping the balance of nature.

    All plants and animals are part of the food chain(链).If the small wetlands animals

die, some animals in the food chain will have nothing to eat. They will also die. People

need the wetlands to keep the balance of nature in the world. If we do not protect nature

today，it will be gone tomorrow.

1.What should you put in your diary?

A. Some frogs.

B. The date of World Wetlands Day.

C. 1971

D. Any special day.

2.Where do people celebrate World Wetlands Day?

A. All over the world.                        B. In ships

C. At home.                                D. In their own way.

3.Which of the following sentences is NOT true?

A. People celebrate World Wetlands Day by taking part in competitions.

B. People celebrate World Wetlands Day by taking hips to local wetlands.

C. People celebrate World Wetlands Day by listening to talks about the wetlands.

D. People celebrate World Wetlands Day by talking about the weather.

4.Why are small animals important?

A. They are part of the balance of nature and the food chain.

B. They are beautiful.

C. Bigger animals are eaten by them

D. Without them, there may be no water.

5.Which of the following might be the best title of the article?

A. Wetlands Are Important

B. Small Animals Are Also Important

C. World Wetlands Day

D. Food Chain