题目内容

Big Ben is not the name of a man. It is the name of a big clock in London. London is the capital of England. This clock has four faces. So, no matter (无论) where you stand, you can read the time on the face of Big Ben. Each face is the size of a bus. The hands are about four meters long. It is about the size of two people standing on top of each other. If you go to London, you may want to visit the Houses of Parliament (国会大厦). In that place you will find Big Ben sits at the top of the clock tower in the Houses of Parliament. You will probably hear it and see it. The big clock makes such a loud noise. ‘Ding dong, ding dong.’ It goes every quarter of an hour. The name of Big Ben comes from a big builder.

1.Big Ben is in ____________.

A. China B. the USA C. Japan D. the UK

2.The clock strikes (敲) every ________ minutes of an hour

A. ten B. fifteen C. thirty D. forty-five

3.You can read the time of Big Ben ____________.

A. at the top of the clock tower B. in the Houses of Parliament

C. on the hands of the huge clock D. on the four faces of the clock

4.The underlined (划线部分) word ‘hands’ means ________ in Chinese.

A. 手 B. 标志 C. 指针 D. 发条

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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 Matthaei 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 would have to meet a lot of trouble if DNA technic wasn’t limited in use.

根据短文内容,选择最佳答案。

1.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.

2.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 illnesses.

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

3.What do people think about this work?

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

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

Barbara Finch, from England, started a friendship with Elizabeth Martin from New Zealand when the two were just 14 years old. And they have been penfriends for the past seventy years.

“Seventy years is a long time and such a lot has happened,” says Barbara.“I've lost my husband and my son, and she's lost her husband and her daughter. With things like that, her friendship means a lot to me.”

The two started writing letters to each other in November 1947. At that time, Barbara was a pupil. In her school, there was an exchange (交换) teacher from New Zealand. She helped her students to find penfriends from her country. Among the many penfriends, Barbara and Elizabeth were the only pair to form a long-term friendship.

Now both 84, the pair continue to send weekly e-mails to tell each other about their daily lives. Barbara, who's a proud great-grandmother, has kept every single letter and card Elizabeth sent her over the years.

“We e-mail each other now rather than write letters, partly because it's quicker but mostly because there's no cost,” Barbara says.

The pair not only write to each other, but they also meet face to face. They have visited each other 15 times — Barbara flying to New Zealand 10 times and Elizabeth flying to England 5 times.

“Her family has become a second family to me. She says I am the sister she never had,”Barbara says.

1.What do Barbara and Elizabeth have in common?

A. They are both good at writing.

B. They both have two children.

C. They both lost their husband.

D. They were both teachers before.

2.What does Paragraph 3 mainly talk about?

A. What Barbara and Elizabeth wrote in their letters.

B. How Barbara and Elizabeth became penfriends.

C. The good things about making penfriends.

D. A teacher who influenced Barbara a lot.

3.Barbara and Elizabeth now e-mail each other instead of writing letters mostly because ________.

A. it is free B. it is popular

C. it saves time D. it saves paper

4.Which is the best title for the passage?

A. Old habits B. Good old days

C. A lifelong friendship D. Communication and friendship

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