Three kids have been learning chemistry for only a few months. But they have already begun to challenge (挑战) a world famous scientist!
Li Weichi, Huang Runling, and Xiao Yan are from Zhongshan Huaqiao Middle School in Guangdong. They have just found a red cabbage that could be a new kind of acid-base indicator (酸碱指示剂). They want it to take the place of litmus (石蕊) paper.
"We've learnt to think of and ask questions about life by ourselves," said Li, "We work well with each other."
British scientist Robert Boyle discovered the use of litmus paper over 300 years ago. Now it is used widely in experiments all over the world.
But when the kids did some experiments in class last winter, they saw that the litmus paper didn’t turn very blue with base matter. It's hard to get a clear result.
Will there be a better indicator than litmus paper? The three kids decided to try and find out!
How? They went to collect over 40 plants in parks, gardens and markets. Then they ground (研磨) leaves, flowers and stems (茎) to get the pigments (色素) from them.
The kids mixed pigments with acid and base. They spent months watching carefully to see which paper showed the best colour change. They decided it was the litmus paper!
"It's our first scientific journey, Huang said, "But it makes me want to try harder."
【小题1】 Whom did the three kids want to challenge?

A．Their chemistry teacher.	B．Their headmaster.
C．Robert Boyle	D．Thomas Edison

【小题2】 From the text, a red cabbage is a kind of ____.

A．plant

B．animal

C．paper

D．liquid

【小题3】What is widely used as the acid-base indicator now?

A．red cabbage	B．litmus paper
C．any plant	D．any flower

【小题4】The story mainly tells us ____.

A．how to make litmus paper	B．about the three kids' spirit
C．scientists were wrong	D．the kids are heroes

There was a pilot(飞行员) and four people in a small plane.Suddenly there was something wrong with the machine(机器) while it was flying in the air. The smoke was everywhere in the plane.The pilot told the people there were only four parachutes(降落伞).They all became worried and started to make excuses(借口).

  “I must go and mend the machine,”said the pilot , taking one of the parachutes.There was nothing he could do so he jumped out.

  The first person stood up.  “I’m a doctor,”he said.  “I help people live longer and I save lives”He also took a parachute and jumped out.

  The next person said , “I must have a parachute.I’m a very clever person.I have to attend (参加)an important sports match.I know I’ll win the game because I’ll be the cleverest person there.”He picked up a pack and jumped out.

  Two men were left--- an old businessman and a young mountain climber(登山者).By this time the plane was going down fast.The businessman said, “Young man,I’m old but you’re still young ,You take the last parachute.”The yougng mountain climber smiled , “Don’t worry.”he said, “We can both jump to safety because there are still two parachutes.Just now the clever person jumped out with my backpack.”

1.All the people became worried because________.

   A.they couldn’t find the parachutes.

B.they were afraid the plane would be broken and knew there were not enough parachutes  

 for each person.

   C.there was too much smoke and they couldn’t jump out from the plane.

   D.they saw the pilot jump out first.

2..The clever man jumped out with_______.

   A.a parachute   B.nothing

 C.the pack of the climber’s  D. the businessman

3.All the people thought of themselves only except(除了)______。

   A. the clever man             B. the businessman

   C.the doctor                 D. the young man

4.From the story we know that _____ would be dead（会死）.

   A. the clever man             B. the businessman

   C.the doctor                 D. the young man

 

Long long ago, a king had a big rock placed in the middle of a very busy road. Then he hid nearby to see if anyone would move the rock out of the way to make it convenient for others. Some of the king’s wealthiest supporters came past and simply walked around it. Many others complained about the rock and some blamed the king for the problem. To the king’s surprise, no one did anything about moving it out of the way.
Finally, a poor farmer came along, carrying a load of old vegetables. When he saw the rock, he put down his load, and tried to move the heavy rock to the side of the road. No one stopped to help him. Many laughed at him and made jokes as they walked past. Finally, after much pushing and straining, and with no help , the farmer managed(设法) to get the rock to the side of the road. As he bent down to pick up his vegetables, he noticed a small bag lying in the road, exactly where the rock had been. There was a lot of money and a note in the bag. The note was from the king saying that the money was for the person who moved the rock out of the way.
Taking responsibility(责任) is about solving hard problems. The farmer takes responsibility when no one else is prepared to. It does not always mean that you will get an instant reward, but it is a value that builds up a community, and makes life better for all of us.
【小题1】The word “convenient” in Paragraph1 means        in Chinese.

A．重要的

B．方便的

C．必要的

D．有用的

【小题2】Why did the king put a big rock in the middle of the road?

A．To see if anyone would move the rock away.

B．To see who was the most powerful.

C．To find out who was the most poorest.

D．To see how people walked around it.

【小题3】Who moved the rock away？

A．The king	B．The king’s supporters.
C．The wealthy	D．A poor farmer

【小题4】The story mainly tells us that           .

A．everyone should learn to take responsibility

B．nobody likes to solve hard problems

C．taking responsibility always means getting a reward

D．the poor always take more responsibility than the rich

Once there was a piano player in a bar (酒吧). People came just to hear him play. But one night, a lady asked him to sing a song.

“I don’t sing,” said the man.

But the lady told the waiter, “I’m tired of listening to the piano. I want the player to sing!”

The waiter shouted across the room, “Hey, friend! If you want to get paid, sing a song!”

So he did. He had never sung in public before. Now he was singing for the very first time! Nobody had ever heard the song Mona Lisa sung so beautifully!

He had talent(天赋) he was sitting on! He may have lived the rest of his life as a no-name piano player in a no-name bar. But once he found, by accident, that he could sing well, he went on working hard and became one of the best-known singers in the US. His name was Nat King Cole.

You, too, have skills and abilities. You may not feel that your talent is great, but it may be better than you think. With hard work, most skills can be improved. Besides, you may have no success at all if you just sit on your talent.

1.The lady asked the player to sing a song because ________.

A．she had paid him for this

B．she knew him very well

C．she was tired of listening to the piano.

D．she enjoyed his singing

2.Nat King Cole succeeded because ________.

A．the lady helped him a lot

B．he caught the chance(机会)

C．he continued to play in the bar

D．he played the piano well

3.The words “sit on” in the passage probably mean “________”.

A．fail to realize                           B．forget to use

C．try to develop                          D．manage to show

4.From the story we know if you have some talent, you should __________.

A．hide it and wait

B．ask others for help

C．pay no attention to it

D．work hard to improve yourself

5.Which could be the best title(标题) for the passage?

A．Sing in the Bar

B．Achieve Success in Life

C．Never Lose Heart

D．Find Your Hidden（隐藏的） Talent

 

 

         The famous Chinese mathematician(数学家) Hua Luogeng was born in Jintan County, Jiangsu province in 1910. When he was young, life was very difficult for his family. Still, the boy took great interest in math.

         In the summer of 1931, he was fortunate(幸运的) enough to become an assistant in the Math Department(系) of Qinghua University, where he spent every moment he could find working and studying, and he finished his compulsory(必修的) math course all by himself in only 13 months!

         Between the years of 1936 and 1938, he was further studying in Cambridge University in the U.K. In 1950, together with his family, he returned to China from the USA. He said, “I’m Chinese, and I’ll do my best for my motherland.”

         So he did. He devoted(贡献) all his life to the math study and won the great fame(荣誉) for our country.

         He died for heart trouble in 1985 while lecturing in Japan. People will always remember him as a great scientist.

1. Which of the following is not true?

A.      Hua Luogeng is a famous Chinese mathematician.

B.      Hua Luogeng died in China.

C.      Hua Luogeng was born in Jingtan County.

D.      Hua Luogeng comes from Jiangsu.

2. The word “assistant”in this passage means “____” in Chinese.

A.      帮手           B.服务员          C.助教            D.教授

3.Hua Luogeng was ____ in 1937. Which of the following cannot be chosen?

         A. in China    B. abroad    C. in Cambridge    D. in England

4. From the story we can guess that Hua Luogeng was born in ____.

         A. a rich family                                  B. a poor family

         C. a mathematician family                D. a fortunate family