1 . -Who will the space flight to Mars?-My friends and I. 题目和参考答案——青夏教育精英家教网—

题目内容

1 . —Who will___(参加）the space flight to Mars?

—My friends and I.

1. take part in

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( ) 4. Thomas Edison invented over inventions during his life.

A. two thousand B. two thousands of

C. two thousands D. two thousand of

Imagine the situation. You are driving alone in 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）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 of 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.

根据材料内容选择最佳答案。

( ) 1. According to the passage，with the help of the

GPS,people .

A. can’t be lost in a new city

B. can’t find their way in different countries

C. can learn about the culture of an unknown place

D. can spend the least time getting to another place

( ) 2. We can learn from the passage that .

A. there are three parts of the GPS

B. a GPS can’t be put into a watch

C. a GPS can help you start your car

D. the GPS are becoming more and more expensive

( ) 3. The underlined word They in Paragraph 3 means

“ ”

A. receivers B. GPS devices

C. satellites D. ground stations

( ) 4. The passage is mainly about .

A. the history of the GPS

B. the introduction of the GPS

C. the shape of the GPS

D. the three parts of the GPS

( ) 5. What can we infer(推断）from the passage?

A. All GPS devices have electronic maps.

B. People in many countries will use the GPS for free.

C. The receiver of the GPS contacts at least five of the satellites.

D. The GPS will become more and more common in everyday life.

3. Li Lei will take part in his friend’s birthday party tomorrow.

( ) 1. —Is there in today’s newspaper?

—No,there isn’t.

A. something new B. new something

C. anything new D. new anything

用方框内单词的适当形式填空。

weigh, storm, journey, gravity, limit

1. We have to the use of paper,because making paper waste much wood.

2. They have visited many places of interest,so they have a wonderful .

3. Because the forests were cut down,there are some in the north of China.

4. The on the surface of the moon is one sixth of the earth.

5. —How heavy is the box?

—It about 56 kilos.

用方框内单词的适当形式填空。

beyond, launch, alone, yet, planet

1. The earth is a . It moves around the sun.

2. The exercise is the abilities (能力）of most of the class.

3. China has many spaceships to explore the solar system.

4. —Have you finished your work ?

——Yes. I did it last night.

5. Xiao Ming’s parents died When he was young. He is .

1. All the people will travel spaceship in the future.

1. They used to (live) in the dark house in the past.

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