当前位置:高中试题 > 英语试题 > 题材分类 > Vitamin E supplements(补充品),which millions take in the hope of longer, healthier ...
题目
题型:不详难度:来源:
Vitamin E supplements(补充品),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(剂量)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.
小题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
小题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
小题3:  Which of the following contains rich vitamin E?
A.Nuts.
B.Whole grains.
C.Green leafy vegetables.
D.All of the above.
小题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.

答案

小题1:B
小题2:C
小题3:D
小题4:A
解析

小题1:根据第一段的“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。
小题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”作为依据可以推出C项不正确,所以答案是C项。
小题3:从最后一段的“Nuts, oils, whole grains and green leafy vegetables are all rich in vitamin E”中可以找到答案,前三项都有提及,因此答案是D项。
小题4:文章内容是围绕一项研究人们服用维E补充品的结果展开的,而且研究表明人们服用过多会减短他们的寿命。综合四项只有A项最全面最完整,因此答案为A项。
核心考点
试题【Vitamin E supplements(补充品),which millions take in the hope of longer, healthier 】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
Animals seem to have the sense to eat when they are hungry and they do not eat more than their bodies need.It has been demonstrated(证明)that rats will, when given a choice over a period of time, prefer water with vitamins to water without vitamins even though there is no difference in taste or smell between the two water bottles.When a fragrant(香的)flavor(作料)was added to the vitamin-enriched water, the rats did seem to prefer it and kept drinking it ,even after the vitamins were switched to the clear water.In time, however, they broke the habit and went back to where the necessary vitamins were.
In a classic experiment, babies of 6 to 12 months old were placed in a cafeteria(自助) feeding arrangement, with a wide selection of baby food before them.They were given whatever food they pointed to or appeared interested in.We are told that at first they showed some unusual eating patterns, but that over a period of time they managed to select well-balanced diet.
So, in selecting food, rats and babies do seem to know and act on what"s best for them.Apparently, there is a kind of “body wisdom”,  which humans soon lose.Most of us do not eat as wisely as we could.Many of our food preferences are culturally determined and influenced by long-established habits.Some people eat fox, dog and blackbirds, while we eat cows and pigs.So what people eat and how much they eat seems to be greatly influenced by what is going on around them.
小题1:In the experiment on rats, a fragrant flavor was added to the rats’ drinking water to _____________ .
A.encourage rats to drink vitamins-enriched water
B.find out rats’ preference in flavor
C.test whether rats know which drink is good for them
D.demonstrate the vitamins are tasteless
小题2:According to the passage ,adults eating habits differ from those of babies because_________.
A.adults know better than babies what kind of food are good for their health
B.adults usually cannot resist the temptation of various delicious foods
C.adults" eating habits are closely related to the social and cultural customs
D.adults have more choices of food than babies in eating patterns
小题3:The author implied in the passage that most of us_________.
A.eat a balanced diet
B.choose the food that is of nutrition
C.have the habits influenced by the surroundings
D.like to eat the food with a fragrant flavor.
小题4:As far as their eating habits are concerned, babies and rats are similar in that_________.
A.both have the wisdom to choose a balanced diet
B.both prefer flavored food and drink
C.both have the same eating patterns
D.both develop a taste for the same kinds of flavors

题型:不详难度:| 查看答案
BEIJING, Jan. 11(Xinhuanet)-- Sleeping a little bit longer a day might help fight against obesity(肥胖), a recent study shows. The research-- published in the Archives of Internal Medicine along with an editorial by Turek and Northwestern colleague Joseph Bass commenting on it and related research-- after comparing people of normal weight- a body mass index of less than 25- with those who were overweight or obese , found that sleeping for an extra 20 minutes each night could offer a pain-free way to lose weight.
Insufficient sleep is linked with changes in hormone levels that may stimulate(刺激)appetite. A series of studies in recent months have shown that the less people sleep, the heavier they tend to be.
American researcher Robert Vorona from Eastern Virginia Medical School in Norfolk and colleagues have now examined the relationship between people"s self-reported sleep time per 24 hours and their body mass index(BMI). They found that total sleep time and BMI were inversely correlated was total sleep time decreased, BMI increased, except in the severely obese group." Americans experience insufficient sleep and corpulent bodies. Clinicians are aware of the burden of obesity on patients," the study said. "Our findings suggest that major extensions of sleep time may not be necessary, as an extra 20 minutes of sleep per night seems to be associated with a lower body mass index," it added. "We warn that this study does not establish a cause-and-effect relationship between restricted sleep and obesity (but) investigations demonstrating success in weight loss via extensions of sleep would help greatly to establish such a relationship."
In November 2004, researchers from Columbia University in New York City, New York demonstrated a clear link between the risk of being obese and hours of nightly sleep, finding that people aged 32 to 59 who slept four hours or less per night were 73% more likely to be obese than people who slept between seven and nine hours per night.
小题1:The research, which was published in the Archives of Internal Medicine, found that____________.
sleeping for a shorter time a day might help fight agianst obesity
an extra 20 minutes’ sleep each night could offer a way to lose weight wothout pain
total sleep time and body mass index were inversely related
people aged 32 to 59 who slept four hours or less per night were 73% more likely to be obese than people who slept between seven and nine hours per night
小题2:How many research results are presented in the text?
A.Two B.ThreeC.FourD.Five
小题3: What does the underlined word “obses” probably mean?
A.thinB.fatC.energeticD.painful
小题4:According to the text , the author intends to tell us that _____________________.
A.Sleeping a little bit longer a day might help fight against obesity
B.insufficient sleep is linked with changes in hormone lives
C.there exists a clear link between the risk of being obeses and hours of nightly sleep
D.the less people sleep , the heavier they tend to be

题型:不详难度:| 查看答案
Alzheimer’s disease is a major national health problem. Nearly 2 million Americans over the age of 65 have Alzheimer’s disease. It is a leading cause of death among the elderly. But Alzheimer’s disease is not confined(限于)to the aged. There may be a million or more people under the age of 65 suffering from the disease.
At one time, people suffering from the disease were said to be“getting old”.The disease was though to be a natural part of growing old, but it is now known that Alzheimer’s disease strikes young and old alike. It is an organic(器官的)disease that destroys brain cells.
Alzheimer’s disease affects the patient’s memory, speech, and movement. In the beginning stages of the disease, the patient may seem slightly confused. He may have trouble speaking. Then the patient’s memory begins to fail. He may forget dates, telephone numbers, names and plans.
As the disease progresses, the patient may not recognize family and friends. These symptoms(症状)often cause terrible anxiety in the patient. He may feel lost and frightened. Sometimes the patient reacts with wild and bad behavior.
In the last stages of the disease, the patient may not be able to take care of himself. He may have lost the ability to speak and walk.
Scientists don’t know exactly what causes Alzheimer’s disease. It may be caused by a virus(病毒).It may be caused by a poisonous substance(物质)in the environment. At present, there is no cure for the disease. But there are ways to slow its progress. Exercise and physical treatment can help the patients of this disease.
小题1:The main idea of the passage is that Alzheimer’s disease________.
A.is a terrible part of the aging process
B.is an organic disease that affects young and old
C.can be cured by physical treatment
D.causes forgetfulness
小题2:All of the following are symptoms of Alzheimer’s disease EXCEPT_________.
A. forgetfulness                       B. difficulty in speaking
.loss of sight                        D. loss of the ability to walk
小题3:According to the passage, which of the following may be a cause of Alzheimer’s disease?
A.Poisons produced by the brain.B.Getting old.
C.A virus.D.Lack of exercise.
小题4:he progress of Alzheimer’s disease can be slowed by________.
A.operation B.a change in environment
C.medicinesD.physical treatment and exercise

题型:不详难度:| 查看答案
Even as Americans have been gaining weight, they have cut their average fat intake from 36 to 34 percent of their total diets in the past 15 years.  And indeed,  cutting fat  to control or lose weight makes sense. Fat has nine calories per gram. Protein and carbohydrates(碳水化合物) have just four. Moreover, the body uses fewer calories to metabolize fat than it does to metabolize other foods. Compared with protein and carbohydrates — which break down into amino acids and simple sugars, respectively, and can be used to strengthen and energize the body —— dietary fat is more easily converted to body fat. Therefore, it’s more likely to stay on buttocks, thighs and bellies. 
But cutting fat from your diet doesn’t necessarily mean your body won’t store fat. For example, between nonfat and regular cookies, there’s trivial difference in calories because manufacturers make up for the loss of fat by adding sugar. Low-fat crackers, soups and dressings can also be just as high in calories as richer versions. No matter where the calories come from, overeating will still cause weight again. The calories from fat just do it a little quicker. A Wisconsin computer programmer who decided with a diet coach to eat only 40 grams of fat a day learned the lesson firsthand. He wasn’t losing weight. Then he showed his food diary to his coach and revealed he’d been eating half a pound of jelly beans a day. “They don’t have any fat,” he explains. But they had enough sugar to keep him from shedding an ounce.  
Nonfat foods become add-on foods. When we add them to our diet, we actually increase the number of calories we eat per day and gain weight. That was borne out in a Pennsylvania State University study. For breakfast, Prof. Barbara Rolls gave two groups of women yogurt(酵母乳)that contained exactly the same amount of calories. One group’s yogurt label said “high fat”—the other, “low fat.” The “low fat” yogurt group ate significantly more calories later in the day than the other group. “People think they’ve saved fat and can indulge themselves later in the day with no adverse consequences,” says Richard Mattes, a nutrition researcher at Purdue University. “But when they do that, they don’t compensate very precisely, and they often end up overdoing it.”
小题1:What lessons did the computer programme learn ?
A.Overeating will cause weight gain
B.He can eat half a pound of jellybeans a day
C.He can’t didn’t eat any fat
D.His coach gave him a lecture
小题2:Prof. Barbara’s ecperiement proved that _______________.
A.two groups ate the same amount of calories
B.two groups ate the same wmount of yogurt
C.the “ low fat” yogurt group ate more calories later in the day than the other group
D.people increase the number of calories they eat per day and gain group
小题3:According to the author ,________has less calories.
A.fat
B.protein and carbohydrates
C.low-fat soups
D.sugar
小题4: What can you infer from the text ?
A.To keep from being overweight, people have to eat nofat food
B.The calories from fat just do it a little quicker than from protein and carbohydrates
C.People should avoid temptation
D.Americans realize that it is necessary to count calories before eating the food

题型:不详难度:| 查看答案
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(权威)on eating disorders, said.
Orbach must at times think the anti-diet message of her book “fat is a Feminist Issue(女权主义问题)”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(牺牲品) 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.
题型:不详难度:| 查看答案
版权所有 CopyRight © 2012-2019 超级试练试题库 All Rights Reserved.