An analysis by Mount Sinai researchers of over eight years of dietary data from more than 400,000 people has found that the relationship between high consumption of fruits and vegetables and a reduced 题目和参考答案——青夏教育精英家教网—

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An analysis by Mount Sinai researchers of over eight years of dietary data from more than 400,000 people has found that the relationship between high consumption of fruits and vegetables and a reduced risk of cancer is not as strong as commonly thought. The study is published online April 6, 2010 in the Journal of the National Cancer Institute. It is widely believed that a diet rich in fruits and vegetables can reduce the risk of cancer. In 1990, the WHO recommended eating five servings of fruits and vegetables a day to prevent cancer and other diseases. However, although many studies have been conducted since then, none have been able to confirm an association between fruit and vegetable intake and cancer resistance.

Paolo Boffetta, MD, MPH, lead author of the study and Deputy Director of The Tisch Cancer Institute at Mount Sinai School of Medicine, and colleagues analyzed data from the EPIC study to evaluate relationships between cancer risk and intake of total fruit and vegetables combined.

The EPIC followers, which are ongoing and organized by professor Elio Riboli at Imperial College in London, included 142,605 men and 335,873 women surveyed between 1992 and 2000 from 10 Western European countries. Detailed information on their dietary habits and lifestyle differences was obtained. After 8.7 years of follow – up, more than 30,000 of the study's participants were diagnosed with cancer.

Dr. Boffetta and colleagues found a small but significant opposite relationship between high intake of fruits and vegetables and overall cancer risk. In this population, an increase of 200 grams a day of fruits and vegetables resulted in a reduction of about 3 percent of cancer risk. Vegetable consumption by itself also afforded a modest benefit but was restricted to women. Heavy drinkers who ate many fruits and vegetables had a somewhat reduced risk, but only for cancers caused by smoking and alcohol.

"The bottom line here is that, yes, we did find a protective effect of fruit and vegetable intake against cancer, but it is a smaller connection than previously thought," said Dr. Boffetta. "Any cancer protective effect of these foods is likely to be modest, at best.

"However, eating fruits and vegetables is beneficial for health in general and the results of this study do not justify changing current recommendations aiming at increasing intake of these foods," said Dr. Boffetta.

63．A new study shows that .

A．eating fruits and vegetables is beneficial to health

B．a diet rich in fruits and vegetables can reduce the risk of cancer

C．eating five servings of fruits and vegetables a day can prevent cancer and other diseases

D．the association between fruit and vegetable intake and cancer resistance is small

64．Before this study, people would believe that .

A．high intake of fruits and vegetables can prevent cancer and other diseases

B．heavy drinkers have the slightest chance of cancer

C．the WHO’s recommendations were modest

D．the WHO’s recommendations aim at increasing intake of fruits and vegetables

65．The population who took part in this study amounted to .

A．142,605 B．335,873 C．more than 400,000 D．30,000

66．From this study, we can infer that .

A．the intake of fruits and vegetables will be no longer necessary

B．the connection between fruits and vegetables intakes and cancer resistance is smaller than originally thought

C．taking in fruits and vegetables will still be appreciated in spite of the new discovery

D．any cancer protective effect of these foods is likely to be modest

63---66 DACC

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There are several ways you can find out about the countries and places you wish to visit. You can talk to friends who have travelled to the places. Or you can go and see a colour film. Or you can read travel books.

It would seem that there are three kinds of travel books. The first are those that give a personal, subjective(主观的) account of travels which the author has actually made himself. if they are informative and have a good index(索引), then they can be useful to you when you are planning your travels. The second kind are those books whose purpose is to give a purely objective(客观的) description of things to be done and seen. If a well-read, cultured person has written such a book, then it is even more useful. It can be sorted as a selected guide book. The third kind are those books which are called “a guide” to some place or other. If they are good, they will, in addition to their factual information, give an analysis or an explanation. Like the first kind they can be inspiring and interesting. But their basic purpose is to help the reader who wishes to plan in the most practical way.

Whatever kind of travel book you choose you must make sure that it does not describe everything as “wonderful”, “excellent” or “magical”. You must also note its date of publication because travel is a very practical affair and many things change quickly in the twenty-first century. Finally, you should make sure that the contents are well presented and easy to find.

This passage is about _______.

A. how to travel B. how to buy travel books

C. how to read a travel book D. travel books

The following travel books may be of use when you plan your travels except _______.

A. the book written by some people who have had the same travel experience themselves

B. the book which tells you what is worth doing and seeing based on the facts

C. the book in which a lot of big adjectives are used to draw your attention

D. the book which offers you a lot of useful information like a tour guide

The date of the publication must be noticed because _______.

A. the world is changing and so are the places you are going to visit

B. the price of the book is always changing

C. the author of the book may be different

D. the contents of the book are always the same

Everyone agrees that it’s necessary to reduce carbon emissions （排放物） around the world. There is less agreement over exactly how nations should go about achieving a more carbon - free planet. Thus, the environmental equivalent: cap – and – trade carbon emissions, or place a carbon tax on all users?

With cap – and – trade programs, governments limit the level of carbon produced by an industry. Companies that hold their emissions below the cap can sell their remaining allowance on a carbon market, while companies that go beyond their limit must purchase credits on that market. Carbon taxes are more straightforward: a set tax rate is placed on the consumption of carbon with the idea that raising the price will encourage industries and individuals to consume less. At the moment, cap – and – trade has the upper hand, but doesn’t defeat the tax just yet.

Supporters of the tax argue that a cap – and – trade system would be too difficult to administer – and too easily gamed by industries looking to sidestep emissions caps. Cap – and – trade advocates contradict that like all other flat taxes, a carbon collection would relatively burden lower – income families, who spend a greater percentage of their income on energy than rich households.

So which system will have a larger effect on carbon consumption? A 10% carbon tax might reduce the demand for carbon about 5 % or less, according to an analysis by the Carbon Tax Center, an environmental advocacy group. That may not be enough. Businesses and governments haven’t figured out how the two competing systems can work together, but in the end, the world may need both.

1. The passage focuses on_________.

A. programs of collecting taxes

B. systems of reducing carbon emissions

C. reasons for reducing carbon emissions

D. contradictions between the two systems

2. According to the cap – and – trade program, companies_________ .

A. are forbidden to produce carbon emissions

B. are allocated the same amount of carbon consumption

C. can sell their remaining allowance within their limits

D. can sell the extra amount of carbon at a higher price

3. Carbon taxes work by _________.

A. burdening well – off families

B. encouraging industries to consume carbon

C. raising the price for carbon consumption

D. limiting the carbon consumption of industries only

4. The underlined word “cap” in the second paragraph most likely refers to_________.

A. limit B. credit C. level D. rate

5. We can learn from the passage_________ .

A. carbon taxes are difficult to carry out

B. cap – and – trade plays a greater role at present

C. cap – and – trade will be preferable in the future

D. carbon taxes will be preferable in the future

My students often tell me that they don’t have “enough time” to do all their schoolwork.
My reply is often a brief “You have as much time as the president.” I usually carry on a bit about there being twenty-four hours in the day for everyone, and suggest that “not enough time” is not an acceptable explanation of not getting something done.
Once in graduate school, I tried to prove to one of my professors by saying that I was working hard. His answer to me was, “That’s irrelevant (无关的). What’s important is the quality of your work.” Since then I have had time to think carefully about the “hard worker” dodge (诀窍), and I have come to some conclusions — all relevant to the problem of how much time we have.
If you analyze the matter, you can identify two parts of the problem: There is, of course, the matter of “time”, which we can think of as fixed. Then there is the problem of “work” during that time. But, as my professor suggested, it’s not how hard one works but the quality of the product that’s important.
That led me to a new idea: the quality of the work. That concept is perhaps best explained by a sign I once saw on the wall in someone’s office: “Don’t work harder. Work smarter.” There is a lot of sense in that idea.
If you can’t get more time, and few of us can, the only solution is to improve the quality of the work. That means thinking of ways to get more out of the same time than we might otherwise get. That should lead us to an analysis of our work habits. Since “work” for students usually means “homework”, the expression “work habits” should be read as “study habits”.
Then, as a smart student, you will seek to improve those skills that you use in study, chiefly reading and writing. If you learn to read better and write better, there are big benefits that pay off in all your studies.
【小题1】
From the passage, we know that the author is probably ______ .

【小题2】
We can infer from the 2^nd paragraph that we students still _____ .

A．have enough time	B．can meet the president
C．get everything done well	D．should accept the explanation

【小题3】
Which of the following is TRUE according to the passage?

A．The author’s students make good use of their time to do all their homework.

B．The author tried to tell the professor that he/she (author) had done a good job.

C．You can’t improve the quality of the work if you can’t get more time.

D．You’ll try to improve your skills in reading and writing if you’re a clever student

My students often tell me that they don’t have “enough time” to do all their schoolwork.
My reply is often a brief “You have as much time as the president.” I usually carry on a bit about there being twenty-four hours in the day for everyone, and suggest that “not enough time” is not an acceptable explanation of not getting something done.
Once in graduate school, I tried to prove to one of my professors by saying that I was working hard. His answer to me was, “That’s irrelevant (无关的). What’s important is the quality of your work.” Since then I have had time to think carefully about the “hard worker” dodge (诀窍), and I have come to some conclusions — all relevant to the problem of how much time we have.
If you analyze the matter, you can identify two parts of the problem: There is, of course, the matter of “time”, which we can think of as fixed. Then there is the problem of “work” during that time. But, as my professor suggested, it’s not how hard one works but the quality of the product that’s important.
That led me to a new idea: the quality of the work. That concept is perhaps best explained by a sign I once saw on the wall in someone’s office: “Don’t work harder. Work smarter.” There is a lot of sense in that idea.
If you can’t get more time, and few of us can, the only solution is to improve the quality of the work. That means thinking of ways to get more out of the same time than we might otherwise get. That should lead us to an analysis of our work habits. Since “work” for students usually means “homework”, the expression “work habits” should be read as “study habits”.
Then, as a smart student, you will seek to improve those skills that you use in study, chiefly reading and writing. If you learn to read better and write better, there are big benefits that pay off in all your studies.
【小题1】We can infer from the 2^nd paragraph that we students still _____ .

A．have enough time	B．can meet the president
C．get everything done well	D．should accept the explanation

【小题2】Which of the following is TRUE according to the passage?

A．The author’s students make good use of their time to do all their homework.

B．The author tried to tell the professor that he/she (author) had done a good job.

C．You can’t improve the quality of the work if you can’t get more time.

D．You’ll try to improve your skills in reading and writing if you’re a clever student.

【小题3】What’s the passage mainly about?

A．Students don’t have enough time.	B．Don’t work harder; work smarter.
C．No one can get more time.	D．Read better and write better.

Directions: Complete the following passage by using the words in the box. Each word can only be used once. Note that there is one word more than you need.

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