Vitamin E supplements(補(bǔ)充品)，which millions take in the hope of longer, healthier lives, may do more harm than good, researchers reported on Wednesday.?
In fact, people taking high doses(劑量)of vitamin E may in some cases be more likely to die earlier, although the reasons are not clear, said Dr. Edgar Miller of Johns Hopkins University in Baltimore, who led the study.“I think people take vitamin E because they think it is going to make you live longer, but this(study)doesn’t support that.”Miller told reporters.?
Miller and colleagues re?analyzed 19 studies of vitamin E and health between 1993 and 2004. The tests involved more than 136,000 mostly elderly patients in North America, Europe and China. People who took 200 international units of vitamin E a day or more died at a higher rate during the study, which lasted three years, than people who did not take supplements, they told a meeting of the American Heart Association.“It’s about a 5 percent increased risk at 45 years in the tests combined together，”Miller said.“That doesn’t sound like a lot but if you apply it to 25 percent of the (U.S.)adult population taking vitamin E, that is significant.”?
Miller, whose findings are also being published online by the Annals of Internal Medicine, said two?thirds of people who take vitamin E supplements take 400 IU or more.“We don’t think that people need to take vitamin E supplements, which they can get enough from the diet,”he said. Nuts, oils, whole grains and green leafy vegetables are all rich in vitamin E.?
小題1: People take vitamin E supplements, hoping that________.?
A．they can lose weight easily?
B．they may live a longer and healthier life?
C．they can get more and more beautiful?
D．they no longer need any medicine
小題2: The following statements can give us information about Miller EXCEPT_________.?
A．Miller and his team based their research on 19 cases of vitamin E and health between 1993 and 2004?
B．Miller thinks it unnecessary for people to take vitamin E supplements?
C．Miller supposes it impossible for people to get enough vitamin E from their diets?
D．Miller played an important role in the tests conducted by the researchers
小題3:  Which of the following contains rich vitamin E??
A．Nuts.
B．Whole grains.?
C．Green leafy vegetables.
D．All of the above.
小題4: What is this text mainly about??
A．It is reported in a study that vitamin E may do more harm than good to people to live longer and get healthier.
B．Dr.Edgar Miller and his colleagues studied many cases of vitamin E and health.?
C．Dr.Edgar Miller advises that people should not depend on vitamin E supplements for longer and healthier lives.
D．People who took 200 international units of vitamin E a day or more died at a higher rate than people who did not take supplements.

小題1:B
小題2:C
小題3:D
小題4:A

小題1:根據(jù)第一段的“Vitamin E supplements，which millions take in the hope of longer, healtheir lives, may do more harm than good”可以得知答案。
小題2:以最后一段的“We don’t think that people need to take vitamin E supplements, which they can get enough from the diet”作為依據(jù)可以推出C項(xiàng)不正確，所以答案是C項(xiàng)。
小題3:從最后一段的“Nuts, oils, whole grains and green leafy vegetables are all rich in vitamin E”中可以找到答案，前三項(xiàng)都有提及，因此答案是D項(xiàng)。
小題4:文章內(nèi)容是圍繞一項(xiàng)研究人們服用維E補(bǔ)充品的結(jié)果展開的，而且研究表明人們服用過多會(huì)減短他們的壽命。綜合四項(xiàng)只有A項(xiàng)最全面最完整，因此答案為A項(xiàng)。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：閱讀理解

Do junk food ads make kids fat? Should they be banned? Based on the evidence, more and more experts say yes. The latest support comes from a group of New Zealand experts who say they've made a link between kids watching television and bad health.
Researchers from the University of Otago in Dunedin studied 1000 children from age 3 to 26．They found that those who watched television more than two hours a day had higher levels of obesity（肥胖）, blood cholesterol（膽固醇）and smoking — as well as lower levels of physical fitness — when they reached adulthood than kids who watched less than two hours a day.  
Why? Partly because while they are watching TV kids aren't getting out, exercising and playing with other kids, and burning off the calories. But more insidiously（不知不覺地）, while watching TV, they're being shown a lot of ads for drinks and foods of uncertain nutritional value, most of which are full of sugar and fat.
Across the globe, about 155 million kids are obese, according to the International Obesity Task Force. The dangerous thing is not just the well-being of these kids as they grow up, but hundreds of billions of dollars of health costs spent on adults with heart disease, diabetes（糖尿�。�, and the disabilities these disease will cause.
In Australia, two thirds of children are overweight and one third are obese. Twenty years ago, only about ten per cent were obese. And Australia has the greatest amount of junk food ads per hour of television than any other country in the world, including the US and the UK. About 30 per cent of all ads in kids' viewing time are for food or drinks. Most of them are for junk food: burgers, chips, soft drinks and sweets —high in fat, salt or sugar.
Here in Australia, experts are also calling for a ban on TV advertising of junk food to kids. The Coalition on Food Advertising to Children （CFAC） wants to make changes to laws, hoping it can ban all food advertising on TV during the time of the day when children under 12 years old are watching. This includes early and afternoon time, and evening TV between 5 pm and 9 pm.
小題1:From the passage, we can infer that the underlined word “obsess” probably means ______.
A．very strongB．very weak
C．very confidentD．very fat
小題2:According to the passage, how many hours can kids watch TV a day if they want to be healthier in the future?
A．more than 120 minutes a dayB．less than 120 minutes a day
C．180 minutes or so a dayD．240 minutes or so a day
小題3:______ has the greatest amount of junk food ads per hour of TV?
A．AustraliaB．ChineseC．CanadaD．Germany
小題4:In the author’s opinion, the junk food ads on TV are bad for kids’ health because _______.
A．They are very expensive and harmfulB．They waste a lot of kids’ spare time
C．They persuade kids to eat junk foodD．They are more inviting and interesting

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Lego, the inventor of those colorful bricks that have inspired kids’ imaginations world-wide, has celebrated its 50th anniversary.

On January 28, 1958, a man named Godtfred Kirk Christiansen created the plastic building bricks that can now be found in almost every child’s toy box. The simple building block has become one of the most well-known and popular toys around the world.
"The Lego brick continues to be very attractive, because it allows children, and others, to develop their creativity and imagination," said Charlotte Simonsen, a spokeswoman of the Danish Lego company.
The company’s building brick allows an infinite number of links. With just two bricks there are 24 different links, and with six, there are 915 million possibilities, according to Lego.
A half-century after its creation, more than 400 million children and adults spend five billion hours a year putting the bricks together and pulling them apart. Also, the bricks made today can still interlock with those made in 1958.
Lego bricks are not just child’s play: they also attract the interest of adults. South Korean adventurer, Heo Young-Ho, who climbed Mount Everest in 1987, left a Lego toy behind in the snow during his climb.
After its great success Lego experienced a severe crisis at the end of the 1990s, hit hard by fierce competition from electronic games. This so-called "Toy of the Century" then suffered a dark period that lasted several years.
With great efforts, the company began to prosper again, and in 2006 it earned about 1.5 billion dollars in 130 countries. Seven boxes of Lego are now sold every second around the world, and 19 billion bricks are produced each year: enough to encircle the Earth five times！
小題1:The Lego bricks have remained popular in the past 50 years as a result of _______.
A．a(chǎn)ttracting many children worldwideB．brought imagination to the children worldwide
C．making the children and even adults worldwide creative and imaginative
D．having infinite links that bring many imagination
小題2:The author gave the example of South Korean adventurer Heo Young-Ho in order to prove that ______.
A．Heo Youn-Ho also loved playing Lego bricks
B．the Lego bricks made him a mountain climber
C．the Lego bricks not only interest children but also adults
D．the Lego bricks are a must when on goes on an adventure
小題3:It can be inferred from the text that ______.
A．there are 915 different links with just 6 bricks
B．the Lego Bricks Company has made a lot of money from the people worldwide
C．the Lego Bricks can’t compare with computer games
D．the bricks made today don’t change much compared with those made in 1958
小題4:The underlined word “hit” in the seventh paragraph means _____.
A．defeated in a fight or a competition
B．have a crash in an accident or a fight
C．get known through a song
D．a(chǎn)ttack somebodyin a fight
小題5:The main idea of the story is that _____.
A．Lego bricks: brilliant past and struggling future
B．Lego bricks: an attraction of both children and adults
C．Lego bricks: making creativity and imagination
D．Lego bricks: making billions of money every year

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Brian Walker chews pens. He bites them so hard that his boss has warned him to stop or buy his own. Kate’s weakness is more acceptable-she is unable to walk past a cake shop without overeating Sophin Cartier finds her cigarette habit a headache, while Alice’s thumb-sucking drives her boy friend crazy. Four people with very different habits, but they all share a common problem anxiety disorder or, in serious cases. Obsessive Compulsive Disorder  (OCD).
From nail-biting to too much hand-washing, overeating and internet addiction（上癮）,OCD is widespread in almost every workplace and countless home. “It is a relatively common form of anxiety,” says Dr. Mootee. “The main feature of OCD is the repetition of unwanted obsessive（過度的） thoughts such as worries that doors are left unlocked , gas or electrical appliances are left on.” In order to fight against the an esasy checking door locks and gas or electrical appliances.
Dr. Mootee says that repetitive washing, particularly of the hands, is the most common type of OCD. She has treated many patients who wash their hands up to 30 times a day. The technique Mootee uses to treat people with OCD is called cognitive-behavioral therapy（認(rèn)知行為療法）.“It is based on the general idea that people have the ability to change the way they think and behave,” says Mootee.
But when does a habit become a problem? “It’s personal,” says Mootee.“Everyone has something unusual, but if you can’t put up with it, then it’s a problem and you need to do something to change it.”Mootee says many people resist for treatment because they fear they are “crazy”. But as people become more knowledgeable about these problems they will go and get help. The only way to cure is to conquer
小題1:If a person suffers from OCD, be is likely to keep doing any of the following EXCEPT   .
A．chewing pensB．hurting himself
C．sucking fingersD．biting nails
小題2:According to the passage, a person suffering from OCD    .
A．reduces his/her anxiety by taking drugs
B．gets into unwanted habits to relieve stress
C．has unwanted thoughts about habits
D．has unwanted thoughts because of illness
小題3:Dr. Mootee’s treating lechnique is based ont eh idea that    .
A．everyone has something different
B．people can put up with their problems
C．people can change their way of thinking and action
D．people tend to repeat their obsessive actions
小題4:By saying “The only way to cure is to conquer.” Dr. Mootee suggests that an OCD sufferer   .
A．has to be an extraordinary person
B．must cure his illness by himself
C．must overcome many physical illnesses
D．should have a right attitude towards the problem

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Eating disorder is ve ry common now. "When I first wrote about this. the problem was pretty much hidden … I didn’t expect it to get as bad as it is." Susie Orbach, an international authority(權(quán)威)on eating disorders, said.
Orbach must at times think the anti-diet message of her book “fat is a Feminist Issue(女權(quán)主義問題)”has been lost since it was written more than 20 years ago.
Girls, boys, old people --even the famously well-rounded female population of Fiji are falling victims(犧牲品) to fat fear.
"If anything, the situation has got much, much worse. We now have kids as young as eight and women in old people’s homes worried about the way they look." Orbach said.
Even though it has been proved that repeated dieting results in a little more than regaining most of the lost weight, constant dieting has become a way of life for many women. 48 per cent of British women aged 25 to 35 were on some kind of diet and 20 per cent of young women dieted all or most of time. Some of them said they would pop a pill to give them their beautiful shape, even if it meant risking    
their health. Worldwide, 70 million people have an eating disorder. Most are women, but men are increasingly affected, too.
More than half the women and two thirds of the men in Britain weigh too much. while in the United States more than one quarter of adults and about one in five children are overweight. The idea that female beauty is a very thin body could be changed, if clothing factories and magazines showed images(形象) of women of all shapes instead of selecting skeletal-like models and stick-thin actress.
But that is easier said than done.  
To get the message across, Orbach is also considering talking to pop stars such as Victoria Beckham and Geri Halliwell, both of whom have admitted__________________.
1.What’s the best title of the passage?
2.Which sentence in the passage is the closest in meaning to the following one?
Lots of women has chosen constant dieting as part of thir life despite the fact that constant dietting leads to the lost weight being regained.  
3.Please fill in the blank in the passage with proper words or phrases to complete the sentence.(within ten words)
4.Are you in favor of dieting ?And why?(within 30 words)
5.Translate the underlined sentence into Chinese.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

In 1957 a doctor in Singapore noticed that hospitals were treating an unusual number of influenzalike cases. Influenza is sometimes called “flu”or a “bad cold”. He took samples from the throats of patients in his hospital and was able to find the virus（病毒）of this influenza.
There are three main types of influenza virus. The most important of these are types A and B, each of them having several sub-groups（亞群）. At the hospital the doctor recognized that the outbreak was because of a virus group A, but he did not know the sub-group. He reported the outbreak to the World Health Organization in Geneva. W. H. O. published the important news together with reports of the same kind of outbreak in Hong Kong, where about 15％～20％ of the population had become ill.
As soon as the London doctors received the package of throat samples, they began to test them. They found that they could reproduce themselves at a very high speed. Continuing their careful tests, the doctor checked the effect of medicine used against all the known sub-groups of type A virus. On this virus, none of them was of any use.
Having separated the virus, the two doctors now made tests on some selected seleceted animals. In a short time the usual signs of the disease appeared. These experiments showed that the new virus spread easily, but that it was not a killer. Scientists, like the general public, called it simply “Asian flu”.
小題1: The Asian flu mentioned in the passage ____.       [    ]
A．had something to do with a virus group B
B．was reported to W. H. O in Geneva by a doctor in Hong Kong
C．broke out not only in Singapore but also in Hong Kong
D．was taken from the throats of the patients in a hospital in Singapore
小題2:London doctors considered ____.  [    ]
A．Asian flu as a bad cold
B．there were three main types of influenza
C．it was necessary to test the other groups of virus besides group A
D．the influenza called “Asian flu”a new one
小題3:The Singapore doctor helped the world by ____.  [    ]
A．making those with Asian flu well again
B．killing the virus that caused Asian flu
C．finding the sub-group of the virus
D．reporting the outbreak of Geneva
小題4: The Asian flu virus ____.       [    ]
A．was a killer
B．was very weak
C．could reproduce very quickly
D．died very fast

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The common cold is the world's most widespread illness, which is plagues(疫病) that flesh receives.
The most widespread mistake of all is that colds are caused by cold. They are not. They are caused by viruses(病毒) passing on from person to person. You catch a cold by coming into contact, directly or indirectly, with someone who already has one. If cold causes colds, it would be reasonable to expect the Eskimos to suffer from them forever. But they do not. And in isolated Arctic regions explorers have reported being free from colds until coming into contact again with infected people from the outside world by way of packages and mail dropped from airplanes.?
During the First World War soldiers who spent long periods in the trenches(戰(zhàn)壕), cold and wet, showed no increased tendency to catch colds.?
In the Second World War prisoners at the notorious Auschwitz concentration camp(奧斯維辛集中營), naked and starving, were astonished to find that they seldom had colds.?
At the Common Cold Research Unit in England, volunteers took part in Experiments in which they gave themselves to the discomforts of being cold and wet for long stretches of time. After taking hot baths, they put on bathing suits, allowed themselves to be with cold water, and then stood about dripping wet in drafty room. Some wore wet socks all day while others exercised in the rain until close to exhaustion. Not one of the volunteers came down with a cold unless a cold virus was actually dropped in his nose.?
If, then, cold and wet have nothing to do with catching colds, why are they more frequent in the winter? Despite the most pains—taking research, no one has yet found the answer. One explanation offered by scientists is that people tend to stay together indoors more in cold weather than at other times, and this makes it easier for cold viruses to be passed on.?
No one has yet found a cure for the cold. There are drugs and pain suppressors(止痛片) such as aspirin, but all they do is to relieve the symptoms(癥狀).?
小題1:The writer offered _______ examples to support his argument.?
A．4B．5 C．6D．3
小題2:Which of the following does not agree with the chosen passage??
A．The Eskimos do not suffer from colds all the time.?
B．Colds are not caused by cold.?
C．People suffer from colds just because they like to stay indoors.?
D．A person may catch a cold by touching someone who already had one.
小題3:Arctic explorers may catch colds when ________.
A．they are working in the isolated Arctic regions?
B．they are writing reports in terribly cold weather?
C．they are free from work in the isolated Arctic regions?
D．they are coming into touch again with the outside world
小題4:The passage mainly discusses ________.
A．the experiments on the common cold
B．the fallacy about the common cold?
C．the reason and the way people catch colds
D．the continued spread of common colds

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Ways to Burn More Calories
Run through water
Running in water is one of the toughest activities you can perform because the wet stuff is about 12 to 15 times as resistant (具有阻力的) as air. Try your hardest to run and you can burn about 17 calories per minute.
Start fast
Don’t be fooled — slow and steady won’t win the race. A recent study found that after a short warm-up, cyclists who rode hard during the first half of their workouts and then slowed for the second half burned about 10 percent more calories than those who started slow and finished fast.
Take to the sand
Here is some easy-to-remember advice on burning calories: the softer the surface, the more you burn. By walking or running on the beach, you can use up 20 to 50 percent more calories than you do going at the same pace on a hard trail.
Shut up and dance
Here’s the perfect excuse to sign up for that hip-hop dance class you’ve been eager to try. Surprising your body with new activities — dance, a new sport, you name it — forces it to work harder because it’s doing unfamiliar movements and using muscle groups in different ways.
Use your arms
Getting both your upper and lower body involved can provide a big calorie-burning advantage. So if you’re short of time or want to get everything you can out of your usual 45-minute workout, try total-body activities such as rowing ormming. You can evenng your arms as hard as you can while you walk.
小題1: How can water help you burn more calories?
A．By pushing your body.
B．By wetting your clothes and shoes.
C．By forcing you to run faster.
D．By forcing your body to work harder.
小題2:What does “it” in Part 4 refer to?
A．Dance. B．Movement. C．Body. D．Muscle.
小題3:Which of the following statements is TRUE?
A．One can burn more calories when walking on the sand than on land.
B．One can burn more calories when walking on stones than on earth.
C．One can burn more calories when running in water than on the sand.
D．One can burn more calories when exercising using the upper body than using the lower body.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

One day I came home from school, changed my clothes and got ready for work. I worked at a local restaurant in town as a cashier and waiter.

I went to work feeling　　. And to make matters worse, I was busy that evening. It’s the same thing over and over again, 　　with customers who complain about their food and where they are　　is too big or too small. Little things like that tend to　　a lot of us　　but we manage to deal with them.
Three elderly ladies walked in and sat by the windows. It happened to be the very　　near where I keep the dirty　　in the boxes. Trying to keep up with all the dirty tables, customers leaving and coming in and　　running all over the house, it was crazy. 　　these elderly women were watching　　I was working to make sure every table was clean and ready for the next customers.
When they　　their meals, I took their plates back to the kitchen. They talked to me for a while about school, how I was doing, what　　I was in and what I planned to do in the future.
　　they were leaving, they walked past me and one of them said to me in a　　and gentle voice, “You are going places. ”And that was it. They left the　　and I had tears in my eyes, because they gave me　　to believe in myself. They 　　my spirit from being down and gave me a　　to keep on working hard.
People used to tell me that I couldn’t have a career in　　until I had a degree. I’m now a co-anchor(聯(lián)合主持人)of a student-produced television　　. And the best thing is: I’m only 17 years old and I am a senior in high school.
小題1:
A．tiredB．excited　　C．up　　　　D．down
小題2:
A．dealing B．helpingC．talkingD．meeting
小題3:
A．satB．seatedC．laid D．dressed
小題4:
A．a(chǎn)ttract B．a(chǎn)voidC．a(chǎn)djustD．a(chǎn)nnoy
小題5:
A．employeesB．customers
C．bossesD．employers
小題6:
A．tableB．boxC．spot D．kitchen
小題7:
A．dishes B．roomsC．clothesD．chairs
小題8:
A．menB．womenC．waitersD．bosses
小題9:
A．And B．Otherwise
C．ButD．So
小題10:
A．whatB．howC．whereD．why
小題11:
A．finishedB．completedC．orderedD．got
小題12:
A．place B．gradeC．mark D．position
小題13:
A．BeforeB．WhileC．AsD．After
小題14:
A．confidentB．loud C．lowD．pleasant
小題15:
A．kitchenB．houseC．restaurantD．table
小題16:
A．a(chǎn)bilityB．courage
C．imaginationD．time
小題17:
A．put downB．picked up
C．took overD．pointed out
小題18:
A．causeB．reason
C．presentD．permission
小題19:
A．televisionB．government
C．schoolD．restaurant
小題20:
A．companyB．station
C．show D．a(chǎn)dvertisement

查看答案和解析>>

同步練習(xí)冊(cè)答案