题目
题型:不详难度:来源:
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 reanalyzed 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 twothirds 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 |
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 |
A.Nuts. |
B.Whole grains. |
C.Green leafy vegetables. |
D.All of the above. |
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
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 |
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 |
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. |
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 |
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.Three | C.Four | D.Five |
A.thin | B.fat | C.energetic | D.painful |
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 |
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 |
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. |
A.operation | B.a change in environment |
C.medicines | D.physical treatment and exercise |
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 |
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 |
A.fat |
B.protein and carbohydrates |
C.low-fat soups |
D.sugar |
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 |
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.
最新试题
- 1下列不属于新疆发展农业的有利条件的是A.昼夜温差大B.地形为高山、盆地相间分布,且盆地面积较大C.夏季高温,光照充足D.
- 2在“草→鼠→蛇→鹰”这条食物链中,第一营养级为 ,第二营养级为____,第三营养级为 ,第
- 3根据用途,填仪器名称:(1)用作少量试剂的反应容器为______;(2)用于夹持试管的仪器为______;(3)用于搅拌
- 4亚马孙雨林被称为地球之肺,原因是( )A.深刻影响着地球大气中的碳氧平衡B.促进全球水循环,调节全球水平衡C.能够吸
- 5市场上有一些充气包装的食品,装食品的塑料袋内充满了气体,气体充得鼓鼓的,看上去好像一个小“枕头”.为探究袋内充装的气体,
- 6 你知道历史上列强对我国发动的侵略战争有哪些?请说出其中的至少三次,并就其中的一次战争结果说明我们胜利或失败
- 7现代文阅读不朽的失眠 张晓风⑴他落榜了!一千二百年前。榜纸那么大那么长,然而,就是没有他的名字。啊!竟单单容不下他的
- 8多用电表是实验室和生产实际中常用的仪器.小题1:如图甲是一个多用电表的内部电路图,在进行电阻测量时,应将S拨到 或
- 9“在天之变,日月薄蚀。四十二月日一食。五(十)六月月亦一食。食有常数,不在政治。百变千灾,皆同一状,未必人君政教所致。”
- 1020世纪的战争与和平 过去两年的经验已经无可怀疑地证明,任何国家都不能够姑息纳粹。任何人都不能靠抚摸来把
热门考点
- 1I lost my sight when I was four years old by falling off a b
- 2(选做题)(请从A、B和C三小题中选定两小题作答,并在答题卡相应的答题区域内作答,如都作答则按A、B两小题评分)A.(选
- 3一个人的一生中,有许许多多人在为你的成长奉献着、付出过,你应该永远记住那些人和事、那种爱和恩,为此承担一份歉疚,并准备着
- 4口袋中装有红球和白球共100个,从中任意取出20个球,就有红球6个,则口袋中共有白球约______个.
- 5国务院总理温家宝2009年12月18日在哥本哈根说,中国是最早制定实施《应对气候变化国家方案》的发展中国家,也是近年来节
- 6金融风暴让华尔街风光不再,更让共和党声名扫地,却给了奥巴马强有力的支持,这场总统大选的主要议题是经济问题。08年11月5
- 7阅读分析人类基因组研究大事记1990年10月,被誉为生命科学“阿波罗登月计划”的国际人类基因组计划启动。1999年9月,
- 8如果两地的实地距离为5千米,那么在比例尺为1:200000的地图上,两地间的直线距离应是 [ ]A、0.4cmB
- 9如图所示,在粗糙的水平桌面上,有-个物体在水平力F作用下向右作匀加速直线运动.现在使力F逐渐减小直至为零,但方向不变,则
- 10如图,某天,我国一艘渔政船航行到处时,得知正北方向上距处20海里的处有一渔船发生故障,就立即指挥港口处的救援艇前往处营救