Rebecca, a British schoolgirl is eight years old, and she is one of the youngest people who have arrived on the tops of Snowdon, Scafell Pike and Ben Nevis, the three highest mountains in Britain.

Climbing isn't new to this schoolgirl. She took her first trip up a mountain in her dad's backpack when she was just six months old!

“One of the best parts about this climb was Scafell Pike,” said Rebecca. “I've never walked in the dark before, and it was fun seeing all the sheep eyes as they ran around in the dark.” Rebecca brought along food, water, a small medical box, a map, a camera to take photos. Along the way, she and her dad had fun by making up mountain songs.

“All my friends like to stay inside playing computer games, but I like being outdoors best,” says Rebecca. She also enjoys swimming and skating.

The young climber doesn't plan to stay on the ground for long. She wants to climb Mount Kilimanjaro, the tallest mountain in Africa. “And I would like to climb Mount Qomolangma one day, too,” she said.

1.Rebecca took her first trip up a mountain when she was ________.

A. six months old B. six years old

C. eight months old D. eight years old

2.Rebecca saw all the sheep eyes in the dark when she climbed ________.

A. Snowdon B. Ben Nevis C. Scafell Pike D. Kilimanjaro

3.According to the passage, Rebecca doesn't like ________.

A. skating B. swimming

C. running D. playing computer games

4.Rebecca likes climbing probably because ________.

A. she doesn't get along with her friends

B. her dad is good at it and enjoys it

C. she likes listening to songs on the mountain

D. she wants to climb Mount Qomolangma

On June 26, 2000, two scientists, called Francis Collins and Craig Venter, told the world that they could now read the whole “map” of the human body: DNA.DNA is something that everybody has, and it tells the body what to do.DNA is the reason that we look like our mother and father, because we get some of their DNA to make our own.

People have been trying to understand the human body for a long time.In 1860, Gregor Mendel discovered a special reason why we look the same as other people in our family.It is because of small things named “genes” in our body.In 1953, James Watson and Francis Crick made another discovery and found out that those small parts are real messages written in the DNA with a special language.

In 1961, Marshall Nirenberg and Johann Mattaei found a message in DNA showing how DNA tells the cell (细胞) to build its parts.Scientists have now found all the words in the DNA map, but we still do not understand what they all do.By understanding what just one “word” means, we can help save more people from several illnesses.

Most people hope that this will help make better medicine and help sick people.Other people worry that when people begin to know more words and find out lots of other information, we might use it in a wrong way, just to make people more attractive, or stop sick people from getting jobs.Man will have to meet a lot of trouble if DNA technology (技术) isn’t limited in use.

1.When did we first know why we look like other people in our family?

A. In 1860. B. In 1953. C. In 1961. D. In 2000.

2.What does the underlined word “genes” mean in the passage?

A. The “map” of DNA. B. A special language.

C. Small parts of DNA. D. Several illnesses.

3.What did the two scientists first discover in 1961?

A. The “map” of DNA. B. A new illness.

C. The language of DNA. D. A message of DNA.

4.What can we do if we understand some “words” of the language inside the body?

A. Make people get new jobs. B. Make medicine for new illnesses.

C. Make maps of human. D. Make people less attractive.

5.What do people think about DNA technology?

A. It can cause good or bad results. B. It can cause good results.

C. It can cause good results but won’t work. D. It can cause only bad results.

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