Nuclear radiation（核辐射）has a certain mystery, partly because it cannot be detected（探测） by human senses. It can’t be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around but we can’t detect them or sense them without a radio receiver. Similarly, we can’t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being outright by killing masses of cells in important organs. Even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and when they are killed outright. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated（放射治疗）and feel fine, then die of cancer five, ten, or twenty years later as a result. A child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents.
1.According to the passage, the danger of nuclear power lies in __________.
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A．nuclear mystery |
B．radiation detection |
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C．radiation level |
D．nuclear radiation |
2.Radiation can lead to serious trouble even at the lowest level __________.
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A．when it kills a few cells |
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B．if it damages a few cells |
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C．though the damaged cells can repair themselves |
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D．unless the damaged cells can reproduce themselves |
3.Radiation can hurt us so much that it can ___________.
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A．kill large numbers of cells in main organs |
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B．replace cells which may grow into cancer years later |
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C．affect the healthy growth of our younger generation |
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D．A and C |
4.Which of the following can be best inferred from the passage?
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A．The importance of protection from radiation cannot be overemphasized（过度强调）. |
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B．The mystery about radiation has been solved. |
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C．Cancer is only caused by radiation. |
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D．Radiation can hurt those who do know about its danger. |
5.What would be the best title of the text?
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A．Radiation Can Hurt Us. |
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B．Radiation Is the Source of Cancer. |
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C．Radiation Is a Subject Scientists Work on. |
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D．Radiation Is a Mystery. |
Diao Weihao, a student who studies business English at the Chengdu campus of Sichuan International Studies University, was in his dormitory when the earthquake struck at 2:30 pm on Monday.
The 22-year-old felt that his chair was shaking. All of a sudden, the textbooks on the bookshelf began to fall to the floor. The glass in the window broke.
“It felt like our dormitory building was being hit by a tractor,” recalled Diao. “I wasn’t afraid.. I was even excited and curious. Now, looking back, it was a scary experience.”
Diao and his roommates kept their calm. They didn’t try to get out of the building until the shaking stopped. They were on the fifth floor and they feared there might be trouble if they didn’t remain calm.
“We’ve watched lots of disaster films, and that helped us keep cool,” he said. “Only one student sprained（扭伤） his ankle. He was escaping in a hurry. Most of us got outside quickly and safely.”
They were surprised to see so many students outside.
“I began to realize then what had happened,” he said. The college had warned them that in the event of an earthquake, they should leave the dormitory immediately. A few did rush in when it was safe to grab some clothes to keep warm.
Without any tents or bedding, the students stayed on the football field for the whole night. Rain started falling in the morning, but the students all kept in good order. They simply chatted and shared their feelings and comforted each other.
“Our students seemed to have self-control,” he said. “I heard that hospitals in Chengdu have lots of injured people who jumped out of buildings.”
Now, Diao is mostly worried about the people in Wenchuan County.
“It seems we won’t be able to have classes in one or two day’s time,” said Diao. “I want to become a volunteer at the damage-hit area, or donate my blood to the injured people in hospital. Also, I will write on my blog to keep people calm and encourage them to protect themselves during emergencies.”
Since the university is close to Dujiangyan, Diao and his classmates are still forbidden to return to their dorms or classrooms. However, they can eat in the canteen and get information about other parts of Sichuan by reading the newspapers.
1.Where was Diao Weihao when the earthquake happened?
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A．He was in the campus. |
B．He was in the football field. |
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C．He was in his dormitory |
D．He was in his classroom. |
2.What did Diao Weihao feel when he realized what was happening?
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A．Afraid |
B．Interesting |
C．Moved |
D．Calm |
3.When did Diao Weihao and his classmates rushed outside?
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A．During the quake |
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B．The moment they realized what was happening |
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C．After the quake |
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D．When they got warnings. |
4.Rearrange the following events in the proper order according to the passage.
a. They got out of buildings safely.
b. Diao Weihao was in his dormitory.
c. Diao Weihao wanted to be a volunteer.
d. Many classmates went out of the building.
e. An earthquake happened.
f. They stayed on the football field for the whole night.
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A．b→e→a→d→f→c |
B．b→e→d→a→f→c |
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C．e→a→b→d→c→f |
D．f→a→c→f→e→d |
5.From this passage, we know that Diao Weihao and his classmates are _________.
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A．energetic and strong in will |
B．wise and caring |
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C．hardworking and learned |
D．helpful and honest |
It’s only 4 hours flying time from Sydney, but a world away. What better place to rest than a country where the only place people hurry is on the football field and things are done in “Fiji time”?
Viti Levu – Great Fiji – is the largest island. Here you’ll find the capital Suva and the international airport at Nadi. Vatoa, on the other hand, is a tiny island in the farthest part of Fiji. Then there are 331 other islands, many of them with places to stay.
With less than a million people living on islands, you’ll never feel crowded. And with a climate that changes only for five degrees between seasons, there’s never a bad time to come.
From cities to villages, from mountains to beaches, from water sports to wooden artworks, Fiji can give you more adventures and special experiences than you could find almost anywhere in the world.
Whenever you come, wherever you go, you’re sure to see some unforgettable events. From war dances to religious(宗教的) songs. From market days to religious days. It’s not just staged for tourists; it’s still a part of everyday life in Fiji. And any one of us can enjoy Fiji’s spirit by being part of the traditional sharing of yaqona, a drink made from the root of a Fiji plant.
So why not join us for the experience of a lifetime?
1. Where is the international airport of Fiji?
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A．In Suva. |
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B．In Sydney. |
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C．On the island of Vatoa. |
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D．On the island of Viti Levu. |
2.What does the text tell us about Fijian people?
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A．They invented “Fiji time” for visitors. |
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B．They stick to a traditional way of life. |
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C．They like to travel from place to place. |
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D．They love taking adventures abroad. |
3. The words “…is just staged for ”in the fifth paragraph most probably means________
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A．to make sth happen |
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B．to organize an event for people to see |
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C．to take part in an action |
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D．to divide into some parts |
4.One of the things that make Fiji a tourist attraction is _______.
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A．its comfortable hotels |
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B．its good weather all year round |
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C．its exciting football matches |
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D．its religious beliefs |
5.Where can we most probably read this text?
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A．In a personal diary. |
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B．In a science report. |
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C．In a travel magazine. |
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D．In a geography textbook. |
Internet shopping is a new way of shopping. Nowadays, you can shop for just about anything from your armchair. All you need is a computer which is 31 to the Internet. Shopping on the Internet is becoming 32 . In the United States, people 33 over US $ 2.5 billion on Internet Shopping in 2010. This figure is expected to 34 US $ 18 billion by the year 2012.
People can 35 for a variety of products on the Internet. Physical（物质的）products 36 items such as books, CDs, clothes and food. These types of products are the most common purchases through the Internet. You can also buy 37 products such as on-line news or magazine stories, or you can download computer 38 through the Internet. Services such as 39 airline tickets, reserving (预订) hotels or renting cars are also available on the Internet. You can also go shopping on the Internet for entertainment services and take part in on-line 40 .
Internet shopping offers a number of 41 for the shoppers. One of the most important advantages is 42 . You can shop whenever you like as the on-line shops are open 24 hours a day and you don’t have to 43 with other shoppers at the checkout counters. Secondly, it is easy to 44 what you are looking for on the Internet. Even out-of-print books may be ordered on line. Finally, it is often 45 to buy goods through the Internet, because you can pay less money for what you want than in a real supermarket.
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She’s having a lot of trouble with the new computer, but she doesn’t know whom to ____.
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A．turn to |
B．look for |
C．deal with |
D．talk about |
The mother insisted her child ________________________.
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A．to be checked |
B．on having a check |
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C．be checked |
D．should check |
