After spending years searching for a planet with life, scientists may have found one. In September 2010, a team of US scientists discovered an Earth-sized planet called Gliese 581g. It has a surface temperature neither too hot nor too cold for liquid(液态)water. Scientists think there is a chance that the planet could have life.
The planet Gliese 581g goes around a star called Gliese 581, which is about 20 light-years from Earth. That is about 194 trillion(万亿)kilometres -500 million times farther away from us than the moon.
A spacecraft traveling at a one-tenth of the speed of light would reach Gliese 581g within about 220 years. A human can’t live that long, but robotic explorers could make the job easier. However, our fastest spacecraft don’t come anywhere near that one-tenth light-speed mark.
At present, scientists don’t know what the surface might be like on Gliese 581g. What they know is that the planet is at the sight distance from its star to have liquid water. It’s also at the right distance to have an atmosphere that could protect the water if it is on the surface.
Although spacecraft won’t be getting there anytime soon, one way to look for life on Gliese 581g is to turn our radio telescopes(望远镜)towards the planet and search for radiation(放射). By studying the radiation, scientists would find out about the chemicals(化学物质)around the planet and discover it Gliese 581g has an atmosphere. If it has one, studying the atmosphere would give us a good idea if the planet has life or not. But it’ll probably be many years before we can do this properly.
People have been arguing about whether there is alien life on Gliese 581g. Any discussion about alien life is just guessing at this point, according to its discoverers.
【小题1】 What did scientists find in September 2010?

A.A planet with water. B.A planet similar to the earth.
C.A planet without life.D.A planet near the earth.
【小题2】According to the article, Gliese 581g ________.
A.is at the right distance from its starB.moves around the earth
C.is as far away from us as the moonD.can be reached in about 220 years
【小题3】 Paragraph 5 is mainly about ______.
A.the possibility of living on Gliese 581g
B.the kinds of chemicals around Gliese 581g
C.the way of looking for life on Gliese 581g
D.the aim of studying the radiation on Gliese 581g
【小题4】Which of the following is the best title for the passage above?
A.Gliese 581g, a Likely Living PlanetB.Gliese 581, a Likely Living Planet
C.Gliese 581g and Its StarD.Gliese 581g and Radiation

After spending years searching for a planet with life, scientists may have found one. In September 2010, a team of US scientists discovered a planet called Gliese 581g. It has a surface temperature neither too hot nor too cold for liquid(液态)water. Scientists think there is a chance that the planet could have life.

The planet Gliese 581g goes around a star called Gliese 581, which is about 20 light-years from Earth. That is about 194 trillion(万亿)kilometres -500 million times farther away from us than the moon.

A spacecraft traveling at a one-tenth of the speed of light would reach Gliese 581g within about 220 years. A human can’t live that long, but robotic explorers could make the job easier. However, our fastest spacec raft don’t come anywhere near that one-tenth light-speed mark.

At present, scientists don’t know what the surface might be like on Gliese 581g. What they know is that the planet is at the right distance from its star to have liquid water. It’s also at the right distance to have an atmosphere that could protect the water if it is on the surface.

Although spacecraft won’t be getting there anytime soon, one way to look for life on Gliese 581g is to turn our radio telescopes(望远镜)towards the planet and search for radiation(放射). By studying the radiation, scientists would find out about the chemicals(化学物质)around the planet and discover if Gliese 581g has an atmosphere. If it has one, studying the atmosphere would give us a good idea whether the planet has life or not. But it’ll probably be many years before we can do this properly.

People have been arguing about whether there is alien life on Gliese 581g. Any discussion about alien life is just guessing at this point, according to its discoverers.

1.What did scientists find in September 2010?

A.A planet with water.                     B.A planet similar to the earth.

C.A planet without life.                     D.A planet near the earth.

2.According to the article, Gliese 581g ________.

A.is at the right distance from its star          B.moves around the earth

C.is as far away from us as the moon           D.can be reached in about 220 years

3.Paragraph 5 is mainly about ______.

A.the possibility of living on Gliese 581g

B.the kinds of chemicals around Gliese 581g

C.the way of looking for life on Gliese 581g

D.the aim of studying the radiation on Gliese 581g

4.Which of the following is the best title for the passage above?

A.Gliese 581g, a Likely Living Planet           B.Gliese 581, a Likely Living Planet

C.Gliese 581g and Its Star                   D.Gliese 581g and Radiation

 

A wise man used to go to the ocean to do his writing. He had a habit of walking on the beach every morning.

One day, when he was walking along the shore(海岸), he saw a young man moving like a

dancer. He smiled to himself at the thought that someone would dance on the beach. So he began to walk faster to catch up.

As he got closer, he saw that the young man wasn’t dancing, but instead he was reaching down to the shore, picking up something and very gently throwing it into the ocean.

He called out, “Good morning! What are you doing?” The young man stopped, looked up and replied, “Throwing starfish in the ocean.” “I guess I should have asked, why are you throwing starfish in the ocean?”

“The sun is up and the tide(潮汐)is going out. And if I don’t throw them in, they’ll die.”

“But, young man, don’t you realize that there are miles and miles of beach and starfish all along it. You can’t possibly make a difference!”

The young man listened politely. Then he bent down, picked another starfish, and threw it into the sea, and said, “It made a difference for that one.”

There is something very special in each and every one of us. We have all been gifted(赋予)

with the ability to make a difference.

We must each find our starfish. And if we throw starfish wisely and well, the world will be better.

1.What was the wise man used to doing every morning?

A.Taking a walk on the shore.

B.Watching the young man dance.

C.Meeting up with the young man.

D.Helping the young man pick up starfish.

2.Why did the young man throw the starfish into the ocean?

A.To have fun.

B.To study starfish.

C.To feed some fish.

D.To save starfish.

3.What can we learn from the story?

A.Each of us should learn to protect starfish.

B.People living on the shore always try to save starfish.

C.Each of us has the ability to make an important effect on something.

D.People can come up with some good ideas when walking on the shore.

 

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