A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increase the risk.
Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma (黑素瘤). They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma
Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States.
But questions has been raised about sunscreen and whether it may has opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning.
The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer--- people with fair skin and freckles (雀斑), for example--- are more likely to use sunscreen. As a result, it may appear that sunscreen users get cancer more often.
The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study.72. The underlined word “flaws” in the 2nd paragraph most probably means ______.
| A．evidence | B．facts | C．faults | D．failures |
73. People with fair skin and freckles .
| A．seldom use sunscreen | B．are more in danger of skin cancer |
| C．can be free from the harm of the sun | D．often expose themselves to the sun |
74. We can learn from the passage that ______.
| A．sunscreen users get skin cancer more often |
| B．the volunteers have proved the effect of sunscreen |
| C．the new study was based on the experiences of volunteers |
| D．the number of skin cancer patients is increasing in America |
75. Which of the following can be the title for this passage?
| A．Sunscreen to Prevent Skin Cancer | B．Sunscreen to Increase Skin Cancer |
| C．Skin Cancer Caused by Sunscreen | D．Skin Cancer Caused by Freckles |
Deserts are found where there is little rainfall or where rain for a whole year falls in only a few weeks' time. Ten inches of rain may be enough for many plants to survive (存活) if the rain is spread throughout the year. If it falls within one or two months and the rest of the year is dry, those plants may die and a desert may form.
Sand begins as tiny pieces of rock that get smaller and smaller as wind and weather wear them down. Sand dunes (沙丘) are formed as winds move the sand across the desert. Bit by bit, the dunes grow over the years, always moving with the winds and changing the shape. Most of them are only a few feet tall, but they can grow to be several hundred feet high.
There is, however, much more to a desert than sand. In the deserts of the southwestern United States, cliffs (悬崖) and deep valleys were formed from thick mud that once lay beneath a sea more than millions of years ago. Over the centuries, the water dried up. Wind, sand, rain, heat and cold all wore away at the remaining rocks. The faces of the desert mountains are always changing--very, very slowly--as these forces of nature continue to work on the rock.
Most deserts have a surprising variety of life. There are plants, animals and insects that have adapted to life in the desert. During the heat of the day, a visitor may see very few signs of living things, but as the air begins to cool in the evening, the desert comes to life. As the sun begins to rise again in the sky, the desert once again becomes quiet and lonely. Many plants may survive in deserts when_______.
| A．the rain falls only in a few weeks |
| B．the rain is spread out in a year |
| C．there is little rain in a year |
| D．it is dry all the year round . |
Sand dunes are formed when_______.
| A．there is plenty of rain in a year |
| B．sand piles up gradually |
| C．the sea has dried up over the years |
| D．pieces of rock get smaller |
The underlined sentence in the third paragraph probably means that in a desert there is_______.
| A．too much sand | B．more sand than before |
| C．nothing except sand | D．something else besides sand |
It can be learned from the text that in a desert_______.
| A．there is no rainfall throughout the year |
| B．life exists in rough conditions |
| C．all sand dunes are a few feet high |
| D．rocks are worn away only by wind and heat |
What’ the best title of this passage?
| A．Deserts. | B．The plants in the deserts. |
| C．The rainfall in the deserts. | D．Sand dunes. |
The UK's education system is ranked（排列） sixth best in the developed world, according to a global league table published by education firm Pearson in October,2012.
The first and second places are taken by Finland and South Korea.The rankings combine international test results and data such as graduation rates between 2006 and 2010.
Sir Michael Barber, Pearson's chief education adviser, says successful countries give teachers a high status and have a "culture" of education.
International comparisons in education have become increasingly significant - and this latest league table is based upon a series of global test results combined with measures of education systems, such as how many people go on to university.
The two education superpowers - Finland and South Korea - are followed by three other high-performing Asian education systems - Hong Kong, Japan and Singapore.
The UK is then only ranked at the head of an above-average group including the Netherlands, New Zealand, Canada and Ireland.
These are ahead of a middle-ranking group including the United States, Germany and France. At the lowest end are Mexico, Brazil and Indonesia.
These comparisons draw upon tests that are taken every three or four years, in areas such as maths, science and literacy - and so present a picture lagging by several years.
Looking at education systems that succeed, the study concludes that spending is important, but not as much as having a culture that is supportive of learning.
It says that spending is easier to measure, but the more complex impact of a society's attitude to education can make a big difference.
The success of Asian countries in these rankings reflects the high value attached to education and the expectations of parents. This can continue to be a factor when families migrate to other countries, says the report.
Looking at the two top countries - Finland and South Korea - the report says that there are many big differences, but the common factor is a shared social belief in the importance of education and its "underlying moral purpose".What’s the main idea of the passage?
| A．The two different education superpowers |
| B．The result of one report about education system . |
| C．The UK's education system is worst. |
| D．Finland and South Korea’S education system |
According to Sir Michael Barber, Hong Kong’s education system is ranked in the world.
| A．2nd | B．3rd | C．4th | D．5th |
All of the following statements is NOT true EXCEPT ________.
| A．At the lowest end are Mexico, Brazil and Indonesia. |
| B．Education firm Pearson is disappointed at The UK's education system. |
| C．The United States’ education system is one of the best. |
| D．There are many big differences in Finland and South Korea. |
What does the underlined phrase “comparisons” in Paragraph 4 probably mean?
| A．比较 | B．结果 | C．研究 | D．考试 |
What’s the common factor about the education system at the two top countries?
A. The shared social belief in the importance of education and its "underlying moral purpose".
B. The developed economy.
C The high value attached to education and the expectations of parents.
D. Having a culture that is supportive of learning.
It is under the CPC’s leadership that China has overcome many challenges in its economic, political and social systems and achieved remarkable progress the world has ever seen. Under the CPC’s leadership, China has become the world’s largest second largest economy. People’s lives have greatly improved, and hundreds of millions of people have been lifted out of poverty, an objective fact no one can deny. At the same time, China is quickly becoming a major player on the world stage.
As a responsible nation, China has been playing a growing role and shouldered greater responsibilities in world affairs. Such achievements, especially for a nation with a size equaling to a continent and a population of nearly 1.4 billion, are not easy to make. What roles do you think CPC has played in China? Do you think it’s the CPC leadership that has made China’s economic miracle possible? Is there any room for improvements for the future role of CPC? What challenges will lie ahead for the future leadership of CPC? Please share your opinion with us.The purpose of writing the article is to ______.
A. describe the greatest changes in China.
B. describe the importance of China.
C. tell us some challenges facing the CPC.
D. gain more information about the roles the CPC plays in China. According to the passage, CPC refers to .
| A．Communist（共产主义） Party of China |
| B．Cost Per Click（每次点击付费广告） |
| C．card-programming control （卡片程序控制） |
| D．Computer Process Control（计算机过程控制） |
How does the author feel about the roles the CPC has played in China?
| A．Dissatisfied | B．Amazed | C．Annoyed | D．Proud |
The underlined word " miracle " in Paragraph 2 probably means _____.
| A．problem | B．disaster | C．wonder | D．event |
What’s the best title for this passage?
| A．What roles do you think CPC plays in China? |
| B．Why has CPC played an important role in China? |
| C．China has become the world’s second largest economy. |
| D．China has overcome many challenges and achieved remarkable progress. |
Have you ever had a day when everything seemed to go wrong, and nothing seemed to go right? Not too long ago I was having one of those days. I was discouraged, weary, and plain sad. My focus was on me. After all, no one else was experiencing the same trials I was.
I expressed my upset state to my mother, hoping for some pity. Instead, she said, “I heard Jamie was having a difficult day too. Why don’t you make her some cookies and take them to her this afternoon?”
I didn’t really want to, but decided that I didn’t want to go back to my other problems just yet. I made the cookies and arranged them on a little plate. Then I made a card with a sunflower on it and wrote a small note of empathy.
That afternoon I dropped by my friend’s house. I went to the door and rang the bell. Soon, Jamie came to the door and looked at me in surprise for the unexpected visit. Before she could say anything I rushed, “ I heard you were having a hard day and decided to bring you something. I hope your day goes better.” The look that came over Jamie’s face was one that I could never put into words. It was as if a darkened sky was suddenly lit with the golden rays of the sun; it was as if in that small act, her day was brightened.
I got back into the car and for some amazing reason; I felt a lot better myself. That day I experienced the truth that James Barri attempted to describe, “ Those who bring sunshine to the lives of others cannot keep it from themselves.”Which of the following is the best title for the passage?
| A．Sunshine on a Rainy Day | B．Discouraged by Nothing |
| C．Giving Help to a Friend | D．Experience a Cheerless Day |
The author made cookies and arranged them on a plate _________.
| A．so as to show off his skills | B．to stop thinking about his own worries |
| C．not to let his mother feel down | D．not to show his sadness to others |
How did Jamie feel when seeing the author’s coming?
| A．She lit up very soon. | B．She was surprised and scared. |
| C．She couldn’t express herself. | D．She poured out all her worries. |
What do you think of the author’s mother?
| A．Sympathetic. | B．Willing. | C．Instructional. | D．Selfish. |
The passage is mainly about _________.
| A．dealing with others when they are angry | B．adjusting well the mental condition |
| C．taking mother’s advice every hour | D．enjoying oneself at any time |
When you visit America, you will see the word Motel on signs and notice boards. It is made up of “motor” and “hotel” and it is really a hotel for people who arrive by car (how-ever, you don’t need a car to stay at one). You have to pay when you arrive for your room, which usually has a bath. Meals are not provided, but there will certainly be a cafeteria (自助餐馆). Americans eat a lot of salads and sandwiches. Along the main roads there are a lot of motels. Each tries to offer more than next. Some provide television in every bedroom; others have swimming pools; and so on. Motels are especially useful when you are in the country, far from a town or city. You will also find them in the big National Parks.
In these great National Parks, you may meet guests you don’t expect to see. An American friend told me a little story. In the middle of a moonless night she heard strange noises outside her motel window in the Yellowstone National Park in Wyoming. Thinking it might be a thief, she jumped out of bed, opened the door and crept towards a dark shadow(阴影）. As she got close, she saw the thief. She was dreadfully frightened: it wasn’t a human thief — it was a big black bear. The bear was turning over some empty tins with its paw, looking for tasty bits of food. My friend decided to leave that particular thief alone!
There are also, of course, places called “rooming houses”, where they receive lodgers (房客). You will see such signs as Tourists or Rooms Rent, and you could try one of these. A word of warning — looking for a room in New York during the tourist season is like looking for gold on the moon! Which of the following is TRUE about motels?
| A．You can only find motels in the big National Parks. |
| B．They are free for people who arrive by car. |
| C．If you want to stay at a motel, you must have a car. |
| D．The word “motel” is formed by two words. |
Which of the following is NOT provided by motels?
| A．Baths. | B．Swimming pools. | C．TV. | D．Meals. |
The underlined word “crept” in the second paragraph probably means “______”.
| A．moved slowly | B．rushed out | C．threw away | D．ran fast |
The second paragraph mainly tells us ______.
| A．an interesting story |
| B．the experience of the author’s friend |
| C．we may meet animals in the National Parks |
| D．bears usually look for food at night |
From the last paragraph, we can learn that in New York during the tourist season ______.
| A．tourists can find gold there |
| B．tourists can have a sweet dream there |
| C．it is difficult to find a room there |
| D．there is warning for tourists to New York |
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