摘要: Just a few months. 才几个月.

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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 color 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.plantB.animalC.paperD.liquid
【小题3】What is widely used as the acid-base indicator now?
A.red cabbageB.litmus paper
C.any plantD.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
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A

Steve Jobs, the CEO of Apple, was not a good student when he was in school. At that time, he always got into trouble with his schoolmates. When he went to college, he didn’t change a lot. Then he dropped out(退学). But he was full of new ideas.

After that, Steve Jobs worked as a video game designer in a company. He worked there only for a few months and then he went to India. He hoped that the trip would give him some new ideas and a new chance to change his life.

Steve Jobs lived on a farm in California for a year after he returned from India. In 1975, he began to make a new type of computer. He designed the first Apple Computer with his friend in his garage. He chose the name “Apple”just because it reminded him of a happy summer he once spent in an apple orchard.

His first Apple Computer was a great success. Because of this, Steve Jobs soon became famous all over the world.

1.Steven Jobs always got into trouble with _______ in school.

A.his schoolmates     B.his parents         C.his teachers        D.his brothers

2.Steven Jobs designed the first Apple Computer with his friend _______.

A.in his school       B.in his company      C.in his garage       D.at home

3.Which of the following is not true?

A.Steve Jobs didn’t finish his college.

B.Steve Jobs worked as a video game designer in a company for a few months.

C.Steve Jobs soon became famous all over the world because of his first Apple computer.

D.Steve Jobs chose the name “Apple” just because he liked eating apples.

 

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