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(chǎn) 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．a(chǎn)ny cancer protective effect of these foods is likely to be modest

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

A weather map is an important tool for geographers. A succession of three or four maps presents a continuous picture of weather changes. Weather forecasters are able to determine the speed of air masses and fronts. They are also able to determine whether an air mass is retaining its original characteristics or taking on those of the surface over which it is moving. Thus, a most significant function of the map is to reveal an synoptic picture(氣象圖) of conditions in the atmosphere at a given time.?

All students of geography should to interpret a weather map accurately. Weather maps contain an enormous amount of information about weather conditions existing at the time of observation over a large geographical area. They reveal in a few minutes what otherwise would take hours to describe. The United States Weather Bureau issues information about approaching storms, floods, frosts, droughts and all climate conditions in general. Twice a month it issues a 30-day “outlook” which is a rough guide to weather conditions likely to occur over broad areas of the United States. These outlooks are based on an analysis of the upper air levels.?

With the use of electronic instruments and satellites, enormous gains have taken place recently in identifying and tracking storms over regions which have but few meteorological stations(氣象站).Experiments are also in progress for weather modification studies, although few successful results such as artificial rainmaking have been achieved so far.?

Which is not mentioned in this passage in the following about one characteristic of weather?

A. Fronts.       B. Temperature change. C. Wind speed.      D. Frost.?

The observation of weather conditions by satellites is advantageous because

_______.

A. it is modern and sophisticated?

B. it used electronic instruments?

C. it enables man to alter the weather?

D. it gives the scientists information not obtained readily otherwise?

The word “interpret” in Paragraph 2 most probably means _______

A. explain      B. present       C. modify       D. illustrate

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：湖南省長(zhǎng)沙市雅禮中學(xué)2010屆高三第九次月考 題型：閱讀理解


（C）
Astronaut Jim Voss has enjoyed many memorable moments in his career，including three space flights and one space walk. But he recalls with special fondness a decidedly earthbound（為地球引力所束縛的）experience in the summer of 1980 when he participated in the NASA ASEE Summer Faculty Fellowship Program. Voss， then a science teacher at West Poin，was assigned to the Marshall Space Flight Center's propulsion（推進(jìn)） lab in Alabama to analyze why a hydraulic fuel pump seal （液壓燃料泵的密封圈）on the space shuttle（航天飛機(jī)） was working so well when previous seals had failed. It was a seemingly tiny problem among the vast complexities of running the space program. Yet it was important to NASA because any crack in the seal could have led to destructive results for the astronauts who relied on them.
“I worked a bit with NASA engineers，” says Voss， “but I did it mostly by an analysis. I used a handheld calculator， not a computer， to do a thermodynamic（熱力學(xué)的） analysis.” At the end of the summer，he，like the other NASA ASEE fellows working at Marshall，summarized his findings in a formal presentation and detailed paper. It was a valuable moment for Voss because the ASEE program gave him added understanding of  NASA，deepened his desire to fly in space，and intensified his application for astronaut status.
　　It was not an easy process. Voss was actually passed over when he first applied for the astronaut program in 1978. Over the next nine years he reapplied repeatedly，and was finally accepted in 1987. Since then he has participated in three space missions. The 50 year old Army officer，who lives in Houston，is now in training for a four-month mission as a crew member on the International Space Station starting in July 2000.
　Voss says the ASEE program is wonderful for all involved. “It brings in people from the academic world and gives NASA a special property for a particular period of time. It brings some fresh eyes and fresh ideas to NASA，and establishes a link with our colleges and universities，” Voss explains. “There's an exchange of information and an exchange of perspectives that is very important.”
For the academic side，Voss says，the ASEE program also “brings institutions of higher learning more insight into new technology. We give them an opportunity to work on real world problems and take it back to the classroom.”
66. Why was the hydraulic fuel pump seal important for the space shuttle？
A） Because previous seals all failed.
B） Because it was very complex in running the space program.
C） Because great care has to be taken of the hydraulic fuel pump sealing.
D） Because any crack in the seals would cause disastrous results for the astronauts.
67.The great significance of Voss's findings lies in_________ .
A） strengthening his determination to join in space flights
B） furthering his understanding of NASA
C） consolidating his astronaut status in NASA programs
D） Both A and B
68. How many flights will Voss have finished if his four-month mission starting in July 2000 ends up successfully？
A） Three  B） Two   C） Four     D） Five
69. Which of the following is NOT TRUE according to what Voss said on the ASEE program？
A） Fresh members from the academic world participate in the program.
B） The program brings new outlooks to NASA space programs.
C） It is important for the space scientists to exchange information and perspectives.
D） American colleges and universities are a special property of NASA.
70. What does Voss want to stress in the last paragraph？
A） The technological significance of the program.
B） The educational significance of the program.
C） The philosophical significance of the program.
D） The historical significance of the program.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：上海市靜安楊浦青浦寶山四區(qū)2010屆高三下學(xué)期二模英語(yǔ)試題 題型：閱讀理解

                                                                               
(C)
A weather map is an important tool for geographers. A succession of three or four maps presents a continuous picture of weather changes. Weather forecasters are able to determine the speed of air masses and fronts（冷暖空氣團(tuán)接觸的鋒）to determine whether an individual pressure area is deepening or becoming shallow and whether a front is increasing or decreasing in intensity. They are also able to determine whether an air mass is retaining its original characteristics or taking on those of the surface over which it is moving. Thus, a most significant function of the map is to reveal a synoptic picture of conditions in the atmosphere at a given time.
All students of geography should be able to interpret a weather map accurately. Weather maps contain an enormous amount of information about weather conditions existing at the time of observation over a large geographical area. They reveal in a few minutes what otherwise would take hours to describe. The United States Weather Bureau issues information about approaching storms, floods, frosts, droughts, and all climatic conditions in general. Twice a month it issues a 30-day “outlook” which is a rough guide to weather conditions likely to occur over broad areas of the United States. These 30-day outlooks are based upon an analysis of the upper air levels which often set the stage for the development of air masses, fronts, and storms.
Considerable effort is being exerted today to achieve more accurate weather predictions. With the use of electronic instruments and earth satellites, enormous gains have taken place recently in identifying and tracking storms over regions which have but few meteorological stations (氣象站). Extensive experiments are also in progress for weather modification（改變）studies. But the limitations of modification have prevented meteorological results except in the seeding of super-cooled, upslope mountainous winds which have produced additional orographic (山岳形態(tài)的) precipitation on the windward side of mountain ranges. Nevertheless, they have provided a clearer understanding of the fundamentals of weather elements.
72.  By reading weather maps, students majoring in geography can         .
A. design a project of weather modification
B. interpret the weather condition before the time of observation 
C. obtain data on atmospheric conditions over a wide area 
D. survey ever-changing fronts in local meteorological stations
73. A thirty-day forecast is determined by examining         .
A. daily weather maps                        B. upper air levels
C. satellite reports                              D. changing fronts
74. The observation of weather conditions by satellites is advantageous because ______.
A. electronic instruments are used
B. it enables man to alter the weather
C. it makes weather prediction more time-consuming
D. information not obtained readily otherwise can be gained
75. At the present time, experiments are being conducted in         .
A. controlling and influencing weather
B. determining density of pressure groups
C. 30-day “outlooks”
D. predicting storms

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2013屆浙江省余姚三中高三第二次月考英語(yǔ)試卷（帶解析） 題型：閱讀理解

The ability to memorize things seems to be a vanishing （消失的） technique．So what can we do to bring out brain cells back into action? A newly published book on memory, Moomvalking with Einstein: The Art and Science of Remembering Everything, by American journalist Joshua Foer, makes a telling point, one that is an analysis of the importance of memorising events and stories in human history; the decline of its role in modem life; and the techniques that we need to adopt to restore the art of remembering．
As For points out, we no longer need to remember telephone numbers．Our mobile phones do that for us．We don't recall addresses either．We send emails from computers that store electronic addresses．Nor do we bother to remember multiplication tables （乘法表） ．Pocket calculators do the job of multiplying quite nicely．Museums, photographs, the digital media and books also act as storehouses for memories that once we had to keep in mind．
As a result, we no longer remember long poems or folk stories by heart, feats （技藝） of memory that were once the cornerstones of most people's lives．Indeed, society has changed so much that we no longer know what techniques we should employ to remember such lengthy works．We are, quite simply, forgetting how to remember．
And let's face it, there is nothing sadder than someone who has lost their mobile phone and who finds they cannot even phone home or call their parents or partners because they cannot remember a single telephone number．That is a sad example of loss of personal independence．So, yes, there is a need for us to he able to remember certain things in life．
Therefore, Foer's book outlines the methods that need to be mastered in order to promote our memories and regain the ability to recall long strings of names, numbers or faces．In the process, he adds, we will become more aware of the world about us．
The trick, Foer says, is to adopt a process known as " elaborative encoding", which involves transforming information, such as a shopping list, into a series of "absorbing visual images"．If you want to remember a list of household objects—potatoes, cottage cheese, sugar and other items, then visualise them in an unforgettable manner, he says．Start by creating an image of a large jar of potatoes standing in the garden．Next to it, imagine a giant tub of cottage cheese—the size of an outdoor pool—and then picture Lady Gaga swimming in it．And so on．Each image should be as fantastic and memorable as possible．
Using methods like this, it becomes possible to achieve great feats of memory quite easily, Foer says．It certainly seems to have worked for him: he won the annual US Memory Championships after learning how to memorize 120 random digits in five minutes; the first and last names of 156 strangers in 15 minutes; and a deck of cards in under two minutes．"What I had really trained my brain to do, as much as to memorise, was to be more mindful and to pay attention to the world around," he says．
These techniques employed by Foer to master his memory were developed by Ed Cooke—a British writer and a world memory championship grandmaster．He acted as Foer's trainer during preparations for the book and helped him achieve his championship performances．" Memory techniques do just one thing: they make information more meaningful to the mind, making the things we try to learn unforgettably bright and amusing," said Cooke．
【小題1】Which of the following is conveyed in this article?

A．People become more independent with modern equipment．
B．The memory's role in life is declining in modem society．
C．Memory techniques can make information less meaningful．
D．Ed Cooke is the first one who benefited from Foer's techniques．
【小題2】According to Joshua Foer, people no longer memorize information today because________．
A．museums can do everything for them．
B．they no longer have the ability to memorize things．
C．they have things that can act as storehouses for memories．
D．it is not necessary to memorize anything in modem life．
【小題3】One method of memorizing things mentioned in the passage is to ________．
A．link things to famous pop stars
B．find the connection between different things
C．form vivid, unforgettable images of certain things
D．use advanced digital imaging technology to help
【小題4】The underlined word "visualise" in the last paragraph most probably means "_______"．
A．imagineB．undertakeC．remarkD．indicate
【小題5】This passage can be sorted as ________．
A．a(chǎn) news reportB．a(chǎn)n advertisement
C．a(chǎn) scientific discoveryD．a(chǎn) book review

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：江西省名校2010屆高考信息試卷英語(yǔ)（一） 題型：閱讀理解


As the economic crisis goes worse, some reader are turning to bookstores for advice on how to manage their own finances. Below are the top-ten selling books in both categories for the week ended Oct.18 at Barnes & Noble Inc., the country’s largest book retailer (零售商). Here readers are buying books whose titles feature such words as “failed”, “crisis” and “danger”.
1. The total Money Makeover by Dave Ramsey. A primer on how to cut debt, save money and create a financial strategy.
2. Debt Cures ‘They’ Don’t Want You to Know About by Kevin Trudeau. A look into the dangers of credit card spending and how to reduce your expenses.
3. Women & Money: Owning the Power to Control Your Destiny by Suze Orman, Ms. Orman writes about how women can gain better control of their finances by better understanding their relationship with money.
4. The Money Book for the Young, Fabulous & Broke by Suze Orman. A book on what the young need to know now about money management.
5. The Smart Cookies’ Gude to Making More Dough by the Smart Cookies with Jennifer Barrett. The book’s advice: Take charge and get out of debt.
6. The Forgotten Man: A New History of the Great Depression by Amity Shlaes. A look at what happened during that other crisis.
7. The Partnership: The Making of Goldman Sachs by Charles D. Ellis. An inside look at the famed investment-banking firm.
8. “Bad Money: Reckless Finance, Failed Politics, and the Global Crisis of American Capitalism by Kevin Phillips. Mr. Phillips documents the unreaveling of the U.S. economy.
9. The New Paradigm for Financial Markets: The Credit Crisis of 2008 and What It Means by George Soros. An analysis of the issue behind the crisis and their implications.
10. The World is Cured: Hidden Dangers to the Global Economy by David M. Smick. An inside look at what went wrong with the banking system here and abroad.
1.What is the best title for the passage?
A.A Personal Financial List
B.The Country’s Largest Book Seller
C.Serious Economic Crisis
D.Ten Books to Read in the Financial Crisis
2.The reason why readers are buying books including “failed, crisis, danger” is that______.
A.they are discouraged with the serious financial crisis
B.they are to find advice to get through the financial crisis
C.they are concerned about failures in the world
D.they have no choice but to read such books
3.If you desire to get out of debt, you’d better read the book written by      .
A.David M. Smick B.Suze Orman       C.Kevin Phillips     D.the Smart Cookies
4.From the text we know that ______.
A.Charles D. Ellis is famous as an investment-banking manager
B.George Soros has given the detailed root of present economic crisis
C.Amity Shlaes is only interested in the past economic crisis
D.Dave Ramsey is the current Minister of the USA.

查看答案和解析>>

同步練習(xí)冊(cè)答案