Far from the land of Antarctica, a huge shelf of ice meets the ocean. At the underside of the shelf there lives a small fish, the Antarctic cod.
For forty years scientists have been curious about that fish. How does it live where most fish would freeze to death? It must have some secret. The Antarctic is not a comfortable place to work and research has been slow. Now it seems we have an answer.
Research was begun by cutting holes in the ice and catching the fish. Scientists studied the fish’s blood and measured its freezing point.
The fish were taken from seawater that had a temperature of -1.88°C and many tiny pieces of ice floating in it. The blood of the fish did not begin to freeze until its temperature was lowered to -2.05°C. That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture.
The scientists’ next research job was clear: Find out what in the fish’s blood kept it from freezing. Their search led to some really strange thing made up of a protein never before seen in the blood of a fish. When it was removed, the blood froze at seawater temperature. When it was put back, the blood again had its antifreeze quality and a lowered freezing point.
Study showed that it is an unusual kind of protein. It has many small sugar molecules (分子) held in special positions within each big protein molecule. Because of its sugar content, it is called a glycoprotein. So it has come to be called the antifreeze fish glycoprotein, or AFGP.Why can the Antarctic cod live at the freezing temperature?
A. The seawater has a temperature of -1.88°C.
B. It loves to live in the ice-salt mixture
C. A special protein keeps it from freezing.
D. Its blood has a temperature lower than -2.05°C.What does the underlined word “it” in Paragraph 5 refer to?
A.A type of ice-salt mixture. |
B.A newly found protein. |
C.Fish blood. |
D.Sugar molecule. |
What does “glyco-” in the underlined word “glycoprotein” in the last paragraph mean?
A.sugar | B.ice | C.blood | D.molecule |
What is the best title of this passage?
A.Discovery of the AFGP. |
B.A special fish living in Antarctica. |
C.The ice shelf around Antarctica. |
D.Protection of the Antarctic cod. |
IV..阅读理解(共17小题;每小题2分,满分34分)
Foods from Around the World
Foods that are well known to you may not be familiar to people from other countries. Here are four people’s experiences with foreign food.
Shao Wong is a student in France. He comes from China. “I’d never tasted cheese or even milk before I came here. Cattle are rare in my part of China, so there are no dairy products. I tried milk when I first arrived in France. I hated it! I sampled cheese too, but couldn’t manage more than one bite. I love ice cream, though, and that’s made from milk.”
Birgit is from Sweden. She traveled to Australia on vacation. “I was in a restaurant that specialized in fish, and I heard some other customers order flake. So I ordered some too and it was delicious. Later, I found out that flake is an Australian term for shark. After that pleasant experience, whenever I see a new food I try it out on purpose. You know why? I remember how much I enjoyed flake.”
Chandra is a dentist in Texas. She originates from India. “I’m frightened of eating new foods because they might be made from beef. I’m a Hindu, and my religion forbids me to eat meat from the cow. It’s a sacred animal to Hindus, so that’s the reason I can’t eat hamburgers or spaghetti with meatballs.”
Nathan is American. He taught for a year in China. “My friends gave me some 100-year-old eggs to eat. I didn’t like the look of them at all. The insides were green, but my friends said the color was normal. The Chinese put chemicals on fresh eggs. Then they bury them in the earth for three months. So the eggs weren’t really very old. Even so, I absolutely refused to touch them.”
Life in a new country can be scary, but it also can be fun. Would you sample a 100-year-old egg? Would you order shark in a restaurant?
56. Which of the following sentences is true about Shao Wong?
A. He is a French – Chinese.
B. Cattle are seldom raised in his hometown.
C. He doesn’t like any diary products.
D. He didn’t taste cheese because he hated it.
57. What kind of girl is Birgit?
A. Religious. B. Brave. C. Confident. D. Open- minded.
58. Chandra is frightened of eating food made from beef, because _________.
A. It’s against Hindus’ religion.
B. She is a doctor and she thinks beef is not easy to chew and digest.
C. She is an Indian.
D. Hindus think beef is not tasty.
59. The underlined word “Sacred” in paragraph 4 means _________.
A. frightening B. large C. man – eating D.greatly respected
60. What can you infer from this passage?
A. Foods that are well known to you may not be familiar to people from other countries.
B. Despite (虽然) cultural differences in food, have a try and maybe you’ll get used to it.
C. A vacation is a good way to learn about new foods. Be sure to go on vacation more often.
D. People dislike eating new foods only because their religion forbids it.
通读对话,然后选择可以填入相应空白处的五个答案。
A:Good morning. ____
B:Yes, please. Could you introduce me a nice place to see over the weekend?
A:OK, Qingdao is a nice place to visit. ____ The weather is neither hot nor cold.
B:Sounds good. ____
A:You can get there by train.
B:Shall I visit places of interest by bus in Qingdao?
A:Sure. ____
B:Really perfect. ____
A:280 yuan each person. It includes train tickets, park tickets, hotel and meals.
B:Well. It’s nice. I’d like to book the tour for two.
A.It’s the right time to go there. | B.Which place are you going to visit? |
C.How can I get there? | D.Hope you will have a great time there. |
E. How much does it cost? F. Can I help you, madam?
G. Our sightseeing bus will take you around the city.
How to apply (申请) for a free mailbox (邮箱)? First you have to connect to the Internet and go to the homepage of the ICP providing free mailboxes. Then you will find an icon (图标), an agreement about the rules for using the free mailbox will appear. If you want to go, click the icon “I agree”. Then you have to fill in a form about your basic personal data, and the name and PIN (密码) of the mailbox. The PIN is the key to the mailbox. After finishing these, you will get a mailbox like this:your name @ mail server (for example:tvguide@mail.cctv.com.cn. “tvguide” is the name of the mailbox, and “mail.cctv.com.cn” is the name of the mail server.). The mailbox is separated (分隔) into two parts by a separator “@”, which is read as “at”. The former part is the name of the mailbox. The latter is the domain name (域名) of the mail server. All mails to you will be received by the server and put into your mailbox. You can read these mails on any computer on the Internet in the world, if you have the name and PIN of the mailbox.If you want to send or receive an e-mail, you should first ____ .
A.apply for a mailbox | B.buy a computer |
C.go to the post office | D.fill in a form |
When you get a FREE mailbox, you can send an e-mail ____ .
A.by paying some money | B.to anyone |
C.without paying money | D.anywhere |
The mailbox’s name in the e-mail address “editor@ew.com.cn.” is ____ .
A.ew | B.ew.com.cn | C.com.cn | D.editor |
The writer mainly wants to tell us how to ____ in this passage.
A.send a letter by e-mail | B.read the e-mail on computers in the world |
C.get a free mailbox | D.find out one’s e-mail address |
We can find the similar information in the book “____”.
A.Who Moved My Cheese | B.Surfing on the Internet |
C.Bill Gates’ Story | D.Harry Potter |
Throughout history, people have been interested in knowing how languages first began, but no one knows exactly where or how this happened. However, we do know a lot about languages, the languages of today and also the languages of earlier times. There are probably about 3,000 languages in the world today. Chinese is the language with the most speakers. English, Russian and Spanish are also spoken by many millions of people. On the other hand, some languages in the world have less than one hundred speakers.
There are several important families of languages in the world. For example, most of the languages of Europe are in one large family called Indo-European. The original (最初的) language of this family was spoken about 4,500 years ago. Many of the present day languages of Europe and India are modern forms of the language of 4,500 yeas ago.
Languages are always changing. The English of today is very different from the English of 500 years ago. In time some even died out completely. About 1,000 years ago, English was a little-known relative of German spoken on one of the borders of Europe.
If a language has a large number of speakers or if it is very old, there may be differences in the way it is spoken in different areas. That is, the language may have several dialects. Chinese is a good example of dialect differences. Chinese has been spoken for thousands of years by many millions of speakers. The differences between the dialects of Chinese are so great that speakers of Chinese from some parts of China can’t understand speakers from other parts.The first paragraph mainly tells us that ____ .
A.most people in the world speak Chinese |
B.there are thousands of languages in the world today |
C.man has much knowledge about languages |
D.some people know several languages |
According to the passage, most European and Indian languages ____ .
A.will soon die out completely | B.were once a relative of English |
C.are no longer spoken | D.come from the same family |
According to the passage, ____ has the most speakers.
A.Chinese | B.English | C.Spanish | D.German |
According to the passage, ____ seems to have changed a lot.
A.German | B.English | C.Spanish | D.Chinese |
The underlined word dialect in the last paragraph probably means ____ .
A.a special language spoken by Chinese |
B.the sign used by the Chinese people in a special area |
C.the difference between the old and today’s Chinese |
D.the form of a language used in one part of the country |
Astronomy (天文学) is the oldest science known to man. Thousands of years ago man looked at the stars and wondered about heavens (天堂). But the six planets that he could see with his eyes alone limited man.
The Greeks studied astronomy over 2,000 years ago. They could see the size, color, and brightness of a star. They could see its place in the sky. They watched the stars move as the seasons changed. But the Greeks had no tools to help themselves study the heavens.
Each new tool added to the field of astronomy helped man reach out into space. Until there were telescopes (望远镜), man did not know much about the moon. He did not know that the planet called Saturn (土星) had rings around it. His sight was so limited that he could not see all the planets. In the early 1700s, people thought there were only six planets. Pluto (冥王星), the last of the nine planets to be discovered was seen until 1930.
Before the spectroscopes (分光镜), man didn’t know what kind of gas was in the sun or other stars, without radio telescopes (射电望远镜), we did not know that radio noise came from far in space.
Today, astronomy is a growing science. We have learned more in the past fifty years than in the whole history of astronomy.Thousands of years ago, man watched ____ with his eyes.
A.the moon | B.the stars | C.the universe | D.all the planets |
When the Greeks watched the stars, they could ____ .
A.know what the stars were made of | B.not see their places in the sky |
C.help themselves study the heavens | D.watch the stars move as the seasons changed |
Until there were ____ , man knew very little about the moon.
A.telescopes | B.spectroscopes | C.radio telescopes | D.spaceships |
People didn’t know about Pluto until ____ .
A.the 1700s | B.2,000 years ago | C.1930 | D.thousands of years ago |
____ people began to do research on astronomy.
A.50 years ago | B.90 years ago | C.In the early 1700s | D.Over 2,000 years ago |