游客
题文

C
Organic food has no nutritional or health benefits over ordinary food,according to a major study.
Researchers from the London School of Hygiene & Tropical Medicine said consumers were paying higher prices for organic food because of its imagined health benefits,creating a global organic market worth an estimated $48 billion in 2007.
A systematic review of 162 scientific papers published in the scientific literature over the last 50 years,however,found there was no significant difference.
“A small number of differences in nutrient content were found to exist between organically and conventionally(通常)produced foodstuffs,but these have nothing to do with public health,” said Alan Dangour ,one of the report's authors.
“Our review indicates that there is currently no evidence to support the selection of organically over conventionally produced foods on the basis of nutritional superiority .”
The results of research,which was commissioned by the British government’s Food Standards Agency,were published in the American Journal of Clinical Nutrition.
Sales of organic food have fallen in some markets,including Britain,as a slowdown in economic growth has led consumers to cut back on purchases.
The Soil Association said that growth in sales of organic products in Britain slowed to just 1.7percent,well below the average annual growth rate of 26 percent over the last decade.
64. Why does organic food cost more than conventionally produced food?
A. Because people think they are much healthier.    B. Because they are more delicious.
C. Because people prefer organic food.            D. Because they sell better.
65. According to the study,organic food is_________ than conventionally produced food.
A. much healthier           B. better       C. no healthier           D. less healthier
66. Sales of organic food have fallen because of___________.
A. high price            B. economic decline       C. bad service           D. poor quality
67. Where can you find this passage in a newspaper?
A. Economy            B. Science.      C. Food & Nutrition      D. Fashion

科目 英语   题型 阅读理解   难度 容易
登录免费查看答案和解析
相关试题

Do dogs understand us?
Be careful what you say around your dog. It might understand more than you think.
A border collie named Rico recognizes the names of about 200 objects, say researchers in Germany. The dog also appears to be able to learn new words as easily as a 3-year-old child. Its word-learning skills are as good as those of a parrot or chimpanzee(黑猩猩).
In one experiment, the researchers took all 200 items that Rico is supposed to know and divided the into 20groups of 10 objects. Then the owner told the dog to go and fetch one of the items and bring it back. In four tests,Rico got 37 out of 40 commands right. As the dog couldn't see anyone to get clues, the scientists believe Rico must understand the meanings of certain words.
In another experiment, the scientists took one toy that Rico had never seen before and put it in a roomwith seven toys whose names the dog already knew. The owner then told Rico to fetch the object, using a word the dog had never heard before.
The correct object was chosen in seven out of l0 tests, suggesting that the dog had worked out the answer by process of elimination(排除法). A month later, Rico remembered half of the new names, which is even more impressive.
Rico is thought to be smarter than the average dog. For one thing, Rico is a border collie, a breed (种)known for its mental abilities. In addition, the 9-year-old dog has been trained to fetch toys by their names since the age of nine months.
It's hard to know if all dogs understand at least some of the words we say. Even if they do, they can't talk back. Still, it wouldn't hurt to sweet-talk your dog every now and then. You might just get a big, wet kiss in return!
60. From paragraph 2 we know that __ .
A. animals are as clever as human beings
B. dogs are smarter than parrots and chimpanzees
C. chimpanzees have very good word-learning skills
D. dogs have similar 'learning abilities as 3-year-old children
61. Both experiments show that .
A. Rico is smart enough to get all commands right
B. Rico can recognize different things including toys
C. Rico has developed the ability of learning mathematics
D. Rico won't forget the names of objects once recognizing them
62. Which of the following statements is true?
A. The purpose of the experiments is to show the border collie's mental abilities.
B. Rico has a better memory partly because of its proper early training.
C. The border collie is world-famous for recognizing objects.
D. Rico is born to understand its owner's commands.
63. What does the writer want to tell us?
A. To train your dog. B. To talk to your dog.
C. To be friendly to your dog. D. To be careful with your dog.

WASHINGTON---Worldwide sales of personal computer in 1995 rose 24.7 percent over 1994 with Compaq(美国康柏电脑公司)holding its first—place position while IBM overcame(击败)Apple for the No.2 slot (表上排名),according to Dataquest.
A total of 59.7 million computers were sold around the world with important gains(获得)in Japan and Europe.
Compaq sold 5.99 million computers ,or 10percent of the market ,unchanged from 1994.
IBM sold 4.7 million with an 8 percent share of the market compared with 8.2 percent in 1994 .
Apple sold 4.7 million ,or 7.8 percent of the trade ,compared with 8.4 percent in 1994.
Their lost market share was taken up by Packard Bell and NEC ,which sold 3.1 million and 2.8 million computers separately.
56.Which company was the first in selling computers in 1994?
A.Compaq B.IBM C.Apple D.NEC
57.Which company sold the third most computers in 1995?
A.Compaq B.IBM C.Apple D.NEC
58.What was the market share of Compaq in 1994?
A.5.99% B.8.2% C.8.4% D.10%
59.Packard Bell and NEC take up about of the market share in 1995.
A.8.2% B.52% C.10% D.5%

Social rules or laws on marriage vary widely between countries.Some countries, still do not have a legal minimum age for marriage, which makes child macriages are very common, there.
In the Western Christian countries, a 13 -year -old is still considered a child.Even getting married in one* s late teens is not usually encouraged because married life is likely to interfere with a young woman' s education and consequently restrict opportunities in later life.And there are also physical dangers in giving birth so young.
In Muslim countries such as Saudi Arabia, Iran and Pakistan, the age of puberty(青春期)at around 13 or 14 is the legal age for marriage, but in Turkey it is 15, and in Egypt and Tunisia, 18 the same minimum age as in many Western countries.It is argued that by allowing, earlier marriages, Islamic law is promoting stable relationships, while Western laws are encouraging promiscuity among young people.
In many countries, the trends of urbanization and education for girls have seen a drop in the number of child brides.However, early marriages continue to occur in poor rural areas.In India, for example, the legal age of marriage for a girl is 18 and to a boy, 21.Yet, according to government statistics, 18 percent of ten to fourteen-year old girls in the poor, rural state of Rajasthan in the northwest of the country are married.It is clear, then, that child marriages are connected with poverty, lack of education, rural customs as well as religion.So there don't tend to be any child marriages in urban or rich areas.
57.The underlined word "promiscuity" in the third paragraph means ____.
A.permanent partnership B.firm partnership
C.diverse relationship D.single relationship
58.According to the text, which of these women are married lastest?
A.Women from less educated background.
B.Women from poor rural areas.
C.Women from Islamic countries.
D.Wonf
eri from cities.
59.Child marriages are NOT related to ____ according to the passage.
A.social communication B.rural customs
C.poverty and lack of education D.religious beliefs
60.According to the passage, getting married early leads to all of the following EXCEPT____.
A.reducing a young woman's education
B.limiting a young woman's chances
C.causing baby death
D.doing harm to a young woman's health

Do you want to make a forceful and impressive public speech and become an eloquent (有口才的) speaker? The newly-published books in our bookstore help you realize your dream.Time waits for nobody.Take action! 20% discount on all the orders above $ 100.Here are introductions of these books.

10 Days to More Confldent Public Speaking.
By The Princeton Language Institute, Lenny Laskowski
Paperback: 224 page ISBN: 0446676683 Price: $20 per copy
THIS book is a course on giving publics talks.It was written by an expert in the field and has the tools to make you a relaxed effective and commanding public speaker.You can find clear, brief, step - by - step tips to help you.
●Overcome nervousness and discover your own natural style.
●Set up an immediate connection with your audience.
●Mix together humour and anecdotes (奇闻) into your talk.


In the Spotlight: Overcome Your Fear of Public Speaking and Performing;
By Janet E.Espostio Paperback: 176 page
Publisher:Strong Books ISBN: 1928782078 Price: $15 per copy
"IN the spotlight'' is a gift for people experiencing any degree of fear or discomfort in speaking and performingin front of others, either in formal or informal settings.The book has many different methods to help you get beyond stage rright and learn to speak or perform with ease and confidence.
The Lost Art of the Great Speech: How to Write One and How to Deliver it.
By Richard Dowis.Paperback : 288 pages.ISBN: 0814470548
Publisher: American Management Association.Price: $30 per copy Here's expert guidance on how to write a forceful speech.Attractive slides, confident body language, and a lot of eye contact are fine.Now everyone can learn to give powerful, direct speeches that catch audience' s attention.The key is not just in the delivery, but in using the power of language.It' s a speech - writing guide made by an award winning writer.It has everything from researching and writing the speech to preparing the next to delivering the speech to handling questions from audience.


Lend Me Your Ears: Great Speech in History.
By William Saftre Hardcover: 1055 pages ISBN: 0393040054
Publisher: W.W.Norton & Company. Pice: $ 50 per copy.
THIS is a collection of more than100 speeches that seeks to show the enduring power of human eloquence to inspire and uplift.These speeches are said to have moved millions of people and changed history.There is an introduction to each speech and essay on the art of public speaking.The collection is edited by former presidential speech writer William Safire.He knows firsthand the importance of putting together the right words for the right moment.

53.Suppose you want to buy each of the four books in the bookstore, you will at least have to pay .
A.$115 P.$23 C.$92 D.$85
54.Which of the four books mainly deals with the use of the language in a speech?
A.Lend Me Your Ears: Great Speech in History.
B.The Lost Art of the Great Speech; How to Write One and How to Deliver it.
C.In the Spotnight: Overcome Your Fear of Public Speaking and Performing.
D.10 Days to More Confident Public Speaking.
55.Which of the authors of the books used to write speeches for presidents?
A.Richard Dowis B.Janet, E.Esposito
C.Lenny Laskowski D.William Safire
56.The common purpose of the above books is to____.
A.give encouragement in making a speech
B.tell readers how to make a forcefuLand impresive speech
C.show readers the skills of writing a good speech
D.tell readers how to get over stage fright and to speak easily and confidently

According to the report by Baekeland and Hartmann, two American authoritative psychotogical research centres, the "short sleepers" had been more or less average in their sleep needs until the men were in their teens.But at about age 15 or so, the men voluntarily began cutting down their nightly sleep time because of pressures from school, work and other activities. These men tended to view their nightly periods of unconsciousness as bothersome interruptions, in their daily routines.
In general, these "short sleeps" appeared ambitious, active, energetic, cheerful,, conformist (循规蹈矩的) in their opinions, and very sure about their career choices.They often held several jobs at once, or workers full - or part - time while going to school.And many of them had a strong urge to appear "normal" or "acceptable" to their friends and associates.When asked to recall their dreams, the "short sleepers" did poorly.More than this, they seemed to prefer not remembering.In similar fashion, their usual way of dealing with psychological problems was to deny that the problem existed, and then to keep busy m the hope that the trouble would go away.The sleep patterns of the “short sleepers" were similar to, but less extreme than, sleep patterns shown by many mental patients categorized as manic (疯人).
The "long sleepers" were quite different indeed.Baekeland and Hartmann report that these young men had been lengthy sleeps since childhood.They seemed to enjoy their sleep, protected it, and were quite concerned when they were occasionally deprived (剥夺) of their desired 9 hours of nightly bed rest.They tended to recall their dreams much better than the "short sleepers." did.Many of the "long sleepers" were shy, anxious, introverted (内向), inhibited (压抑) , passive, mildly depressed, and unsure of themselves (particularly in social situations).Several openly states that sleep was an escape from their daily problems.
50.According to the text, which is probably the writer' s real attitude towards these two living habits ____.
A.both of them are healthy habits
B.not both of them are unhealthy habits
C.either of them is not unhealthy habits
D.neither of them is healthy habits
51.When sometimes they cannot enjoy adequate sleep, the long sleepers might ____.
A.feel extremely depressed B.become energetic
C.appeared disturbed D.feel disappointed
52.The writer implies (暗示) that short sleepers _____ in the text.
A.are ideally vigorous even under the pressures of life
B.often neglect the consequences of inadequate(不足的)sleep
C.do not know how to relax properly
D.are more unlikely to run into mental problems

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号