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“There are so many things when you are dealing with cancer that you feel powerless,” Bokser said. “Maybe taking the vitamins gives me a bit more power… you know it’s another fighting agent.”
The study concluded that taking 1,000 international units（IU）of the vitamin daily could cut an individual’s cancer risk by as much as 50 percent. The study found that survival rates for darker-skinned people with breast, colon, prostate and ovarian cancers are worse than that for white people because the high melatonin content in darker skin reduces its ability to produce vitamin D. In the absence of sunshine, a beneficial level of vitamin D can be obtained from food and daily supplements.
While D3 is normally produced in the skin after exposure to sunlight, it can also be obtained from dietary sources, such as oily fish, eggs and meat.
“There is evidence to suggest that the vitamin plays a role in keeping cells healthy. But further research is needed to understand what role vitamin D may play in preventing cancer in humans.” said Sara Hiom, head of health information at Cancer Research UK.
1. The purpose of writing the passage is to tell us .
A. vitamin D can reduce cancer risk
B. to be careful when taking vitamin D
C. cancer can be cured by eating vitamin D
D. scientists have been concerning the function of vitamin
2. By mentioning Bokser, the author wants to show .
A. she was unlucky
B. she has great courage to fight with illness
C. she benefited by taking vitamin D
D. vitamin D is better than other treatments
3. The fifth paragraph mainly shows .
A. how vitamin D works
B. the effect of vitamin D
C. why people love vitamin D
D. white people can live longer
读写任务1 (共1小题, 满分25分)
读下面的短文,然后按要求写一篇150个词左右的文章.
阅读下面的短文，然后按照要求写一篇150词左右的英语短文。
Working after school has become part of most teenagers’ daily life in western countries. In the US, more than 80 percent of American teenagers work after school during their high school years. Many students in Australia and Europe also work part-time. But generally speaking, teenagers in East Asia have not followed this trend. Parents in these cultures encourage their children to spend their most time working. But is working really a waste of time for teens? The answer is unclear. Experts say there are both advantages and disadvantages of teenager employment. One study shows that teenagers who work more than 15 hours a week have lower grades in their exams. They are also less likely to go to college. Teenager depression, anxiety and tiredness have something to do with long work hours as well. But experts haven’t concluded that teenagers should stop working. They admit that holding a part-time job can teach teenagers about responsibility and teamwork. Teenagers also learn about managing their time and money. Employment does bring benefits. Teenagers should be careful, however, to limit their work hours and always put schoolwork first.
[写作内容]
1. 概括短文的内容要点，该部分的字数大约30词左右；
2. 就“Is it a waste of time for teenagers to work after school?”这个主题发表你的看法，至少包括以下的内容要点，该部分的字数大约120词左右；
a）青少年业余时间打零工的利与弊。
b）你是否支持青少年打零工，为什么？
c）你对业余时间打零工的青少年有什么建议？
【写作要求】
你可以使用实例或其他论述方法支持你的观点,也可以参照阅读材料的内容,但不要抄袭阅读材料中的内容。
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发表于 2013-1-25 08:21:31
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