Millions of stars are travelling about in space. A few form groups which travel together, but most of them travel alone.

And they travel through a universe which is so large that one star seldom comes near to another. For the most important part each star makes its journey in complete loneliness, like a ship on an empty ocean. The ship will be well over a million miles from its nearest neighbour. From this it is easy to understand why a star seldom finds another anywhere near it.

We believe, however, that some two thousand million years ago, another star wandering(漫游) through space, happened to come near our sun just as the sun and the moon raised its tides(潮汐) on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; A large tidal(潮汐的) wave must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and thrown off small parts of itself into space.

These small pieces have been going round the sun ever since. They are the planets.

1.Most stars are _________________________.

A. following a regular path in space    

B. moving about without a fixed course

C. seldom wandering about in the universe  

D. always travelling together

2.Some two thousand years ago, the mountain on the sun was raised probably because _____________.

   A. the star moved away from the sun

   B. another star happened to come near the sun

   C. the sun and the moon raised the tides on the earth

   D. a large tidal of wave travelled over the surface of the sun

3.The article suggests that _______________.

   A. how space formed     

B. our earth exists before the sun

   C. no one knows where the earth comes from  

D. our earth used to be a high mountain in the sun

4.The expression “the cause of the disturbance” refers to ________.

   A. the large tidal wave            B. the powerful tidal pull

   C. the star coming near the sun     D. one of sun’s planets

5. In the article, the writer mainly wants to tell us ______________.

   A. where the planets in the universe came from

   B. how the high mountains were formed on the sun

   C. that the universe is so large that we cannot imagine it

   D. why the tides over the surface of the sun were so powerful

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Earth Hour started in Sydney on March 31，2007. O___1___ two million homes and businesses turned off their lights for an hour. A year 1ater，in 2008，Earth Hour became the w____2____ activity and was supported by millions of people from thirty-five countries. In 2009，more than two thousand cities in the world take part in it，and Earth Hour came to China. The purpose of the activity is to s____3____ energy and improve climate(气候). Earth Hour has brought about some great c__4__       to our lives.

We may have different ways of s___5___ the hour. For example, we can go to school on foot or b___6___ bike，plant more trees, use water more than once，never leave the lights o_7___  when we are not at home. Try to make full use of paper by using b   8     sides.[来源:Z*xx*k.Com]

Earth Hour is a call for us to work together for a bright f   9    .  It is also a message of hope and action. Everyone can make a difference. It’s time for us to make our environment b_10__. Come on! Join us in Earth Hour 2011!

On a cold morning at a bus station, a man played six famous pieces of music for about an hour. During that time, about two thousand people went through the station, most of them were on their way to work.

3 minutes later: a middle-aged man noticed there was a musician playing. He slowed down, stopped for a few seconds and went away.

4 minutes later: the musician received his first dollar. A woman threw the money in the box and kept on walking without stopping.

6 minutes later: a young man stopped to listen to him. Then he looked at his watch and started to walk again.

10 minutes later: a 3-year-old boy stopped to look at the musician, but his mother took him away. Several other children did the same as the boy. And nearly all the parents took their children away.

45 minutes later: the musician kept on playing. Only 6 people stopped and stayed for a while. About 20 persons gave him money but left quickly.

After 1 hour, the musician finished playing. In the end, he collected $ 32. No one noticed that he had finished playing.

No one knew this, but the musician was Joshua Bell, one of the best musicians in the world. At that time, he played one of the most wonderful pieces ever written, with a very expensive violin.

If we do not have time to stop and listen to one of the best musicians in the world playing with the most beautiful violin, how many other things are we missing?

1.Joshua Bell played six famous pieces of music for ________ at a bus station.

A．half an hour       B．an hour           C．fifteen minutes     D．a day

2.__________ gave the first dollar to Joshua Bell for his performance.

A．A mid-aged man    B．A Young man       C．A woman          D．A 3-year-old boy

3.Nearly all the parents ________________ while they went past the musician.

A．took their children away                  B．threw the money into the box

C．stayed with their children listening          D．looked at their watch

4.Joshua Bell was in fact ________________.

A．a very famous pianist                     B．a very popular singer

C．a very poor violinist                      D．a very famous violinist