-Is Mars bigger than the earth? -No, It's about the earth. [ ]A. as big as B. as bigger as C. a quarter as big as 题目和参考答案——青夏教育精英家教网—

A. There will probably be no school on Mars.
B. It might take us two or three days to get to Mars.
C. There is a problem for us to live on Mars.
D. Food will not be the same.
E. First, people will have more space.
Many people believe that, by the year 2100, we will live on the planet Mars(火星). Here is what life could be like.
First of all, transport should be much better. By 2100, spaceship can travel at half the speed of light.  【小题1】
Secondly, humans need food, water and air to live. Scientists should be able to find plants that can grow on Mars. These plants will provide us with food and air.
【小题2】  We could easily jump too high and fly slowly away into space. To prevent this, humans on Mars have to wear special shoes to make themselves heavier.
Life on Mars will be better in many ways.  【小题3】  It is possible to live in a large building with many bedrooms. Then, robot will do most of the work, so we have more time for hobbies.
【小题4】 Every student can study, do their homework on the computer and take exams in online schools. Each student will also have their own online teacher called “e-teacher”.
However, in some ways, life on Mars may not be better than that on the earth today.  【小题5】Meals will probably be in the shape of pills(药片) and will not be as delicious as they are today. Also, space travel will make many people feel ill.

The question whether there is life on Mars (火星) has made the public think a lot for more than a century. The closest look showed Mars to be a dusty, cold world, covered by air too thin to breathe. A British spaceship and Europe's Mars spaceship plan to land on Mars or enter orbit (轨道) around it. One of the NASA’s (美国宇航局) spaceships is expected to land on January 3, the other is going to land on the opposite side of Mars on January 24. Since 1960, over twenty spaceships sent to Mars have failed. Most have been lost on flying up or landing because those are the most difficult times of any flights. Scientists wanted to find out whether there was water in Mars. In October, a team of scientists reported that Mars had been a dry wasteland. But weeks later, a second team reported differently that they had found some marks showed clearly that they were made by the rivers. Such marks told us that Mars was a warmer place billions of years ago — just as life first appeared here on Earth. Scientists at once raise a question: if what they said is true, what happened on Mars? Then what about the earth?
【小题1】Which is right about Mars?

A．It’s cold without dust.

B．There is no water or air.

C．It’s warm with some thin air.

D．It’s a dusty, cold world almost without air.

【小题2】Two NASA’s spaceships _______________.

A．will land on the different sides of Mars

B．will land on the same day

C．will enter orbit around Mars

D．will land with a man

【小题3】The most difficult times of a flight are _______________.

A．taking off

B．flying up and arriving

C．entering the orbit and landing

D．leaving the earth and entering the orbit

【小题4】A team of scientists reported that there might be_____________ in Mars.

A．nothing but air

B．nothing

C．water billions of years ago

D．thick air and lakes

【小题5】What are scientists worried about when they raise the question?

A．Life disappeared on Mars.

B．Spaceships can’t land on Mars.

C．The air on the earth gets less and less.

D．The earth might be changed like Mars

The question whether there is life on Mars (火星) has made the public think a lot for more than a century. The closest look showed Mars to be a dusty, cold world, covered by air too thin to breathe. A British spaceship and Europe's Mars spaceship plan to land on Mars or enter orbit (轨道) around it. One of the NASA’s (美国宇航局) spaceships is expected to land on January 3, the other is going to land on the opposite side of Mars on January 24. Since 1960, over twenty spaceships sent to Mars have failed. Most have been lost on flying up or landing because those are the most difficult times of any flights. Scientists wanted to find out whether there was water in Mars. In October, a team of scientists reported that Mars had been a dry wasteland. But weeks later, a second team reported differently that they had found some marks showed clearly that they were made by the rivers. Such marks told us that Mars was a warmer place billions of years ago — just as life first appeared here on Earth. Scientists at once raise a question: if what they said is true, what happened on Mars? Then what about the earth?

1.Which is right about Mars?

A．It’s cold without dust.

B．There is no water or air.

C．It’s warm with some thin air.

D．It’s a dusty, cold world almost without air.

2.Two NASA’s spaceships _______________.

A．will land on the different sides of Mars

B．will land on the same day

C．will enter orbit around Mars

D．will land with a man

3.The most difficult times of a flight are _______________.

A．taking off

B．flying up and arriving

C．entering the orbit and landing

D．leaving the earth and entering the orbit

4.A team of scientists reported that there might be_____________ in Mars.

A．nothing but air

B．nothing

C．water billions of years ago

D．thick air and lakes

5.What are scientists worried about when they raise the question?

A．Life disappeared on Mars.

B．Spaceships can’t land on Mars.

C．The air on the earth gets less and less.

D．The earth might be changed like Mars

What’s the red star in the sky through a telescope(望远镜)? It is Mars. Do you want to know more about it? Take the “Mars Orbit Express”!

“Mars Orbit Express” is a space probe (探测器). It was sent towards Mars by American scientists on August 12th，2005. Its tasks are to study Mars’ atmosphere and return photos to Earth. But before that “Mars Orbit Express” must travel about 100 hundred million kilometers and seven months. It reached Mars’ orbit(轨道)in March，2006.

Mars and Earth have similar weight and size. However，Mars is closer to the sun than Earth. Mars is very cold. The average temperature is below 50℃. The temperature at noon only reaches 20℃ during a Mars day. Its atmosphere is mostly CO2. It has much sand and two moons---Phobos and Deimos.

Scientists think Earth and Mars had similar beginnings 4.6 billion years ago. But while Earth supports millions of lives，Mars becomes bad. “Earth easily could have turned out like that.” said an scientist, “It is important for us to find out why and Mars Orbit Express’ should do that.” “Mars Orbit Express” also would help scientists to learn what might happen to Earth in the future. “Mars Orbit Express” would work for about four years.

1. What can you see through a telescope when watching Mars? ________.

A. Much sand B.A red star C. Its atmosphere D. Its size

2.One of the tasks of Mars Orbit Express is _______.

A. taking pictures of Mars

B. studying the weight of Mars

C. finding out distance between Earth and Mars

D. telling the time it takes to go from Earth to Mars

3.Compared with Earth，_______.

A. Mars has a long history B. Mars is big and heavy

C. Mars is close to the sun D. Mars’ atmosphere is mainly O2.

4. Which might be the proper title for the passage?

A. Mars：differences from Earth B. A probe：to learn more about Mars

C. Mars: change of temperature D. A probe：to tell the future of Earth

试题分类