题目内容
（请给出正确答案）
A．transforming
B．transferring
C．altering
D．shifting
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更多“Vitamins do not provide energy…”相关的问题
They do not provide energy,【31】do they construct or build any part of the body. They are needed for【32】foods into energy and body maintenance. There are thirteen or more of them, and if【33】is missing a deficiency disease becomes【34】
Vitamins are similar because they are made of the same elements—usually carbon, hydrogen, oxygen, and【35】nitrogen. They are different【36】their elements are arranged differently, and each vitamin【37】one or more specific functions in the body.
【38】enough vitamins is essential to life, although the body has no nutritional use for【39】vitamins. Many people,【40】, believe in being on the "safe side" and thus take extra vitamins. However, a well-balanced diet will usually meet all the body's vitamin needs.
(31)
A．either
B．so
C．nor
D．never
They do not provide energy,【21】do they construct or build any part of the body. They are needed for【22】foods into energy and body maintenance. There are thirteen or more of them, and if【23】is missing a deficiency disease becomes【24】.
Vitamins are, similar because they are made of the same elements--usually carbon, hydrogen, oxygen, and【25】nitrogen. They are different【26】their elements are arranged differently, and each vitamin【27】one or more specific functions in the body.
【28】enough vitamins is essential to life, although the body has no nutritional use for【29】vitamins. Many people,【30】, believe in being on the "safe side" and thus take extra vitamins. However, a well-balanced diet will usually meet all the body's vitamin needs.
(36)
A．either
B．so
C．nor
D．never
(79) Natural foods, for example, are vegetables, fruit and grain which have been grown in soil that is rich in organic (有机的) matter. In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of which is to increase the amount—but not the quality—of foods grown in commercial farming areas.
Natural foods also include animals which have been allowed to feed and move freely in healthy pastures(牧场). Compare this with what happens in the mass production of poultry: there are farms, for example, where thousands of chickens live crowded together in one building and are fed on food which is little better than rubbish. Chickens kept in this way are not only tasteless as food, they also lay eggs which lack important' vitamins.
There are other aspects of healthy eating which are now receiving increasing attention from experts on diet. Take, for example, the question of sugar. This is actually a non-essential food ! Although a natural alternative, such as honey, can be used to sweeten food if it is necessary, we can in fact do without it. It is not that sugar is harmful in itself. But it does seem to be addictive: the quantity we use has grown steadily over the last two centuries and in Britain today each person consumes an average of 200 pounds a year! Yet all it does is to provide us with energy, in the form. of calories. There are no vitamins in it, no minerals and no fiber.
(80) It is significant that nowadays fiber is considered to be an important part of a healthy diet. In white bread, for example, the fiber has been removed. But it is present in unrefined flour and of course in vegetables. It is interesting to note that in countries where the national diet contains large quantifies of unrefined flour and vegetables, certain diseases are comparatively rare. Hence the emphasis is placed on the eating of whole meal bread and more vegetables by modem experts on "healthy eating".
People have become more interested in natural foods because ______.
A．they are more health conscious
B．they want to taste all kinds of foods
C．natural foods are more delicious than processed foods
D．they want to return to nature
听力原文： Stress is a very normal part of life. Most people feel stress at some time in their lives. It doesn't come from an event itself, that is, from the things that are happening in our lives. It comes from the meaning we give to what has happened. We can experience stress any time we feel we don't have control. It can come from a feeling that we can do anything about a situation.
Stress is not just caused by our mental or emotional condition. It is also influenced by how tired we are, whether we have a balanced diet with enough vitamins and minerals, whether we get enough physical exercise and whether we can relax. If we feel stressed, there are several things that we can do. First, we need to learn how to relax and breathe slowly and smoothly.
We can also take some time out of our worried, busy schedule to notice the small things in life. Smell the air, look at the flowers, notice the small designs in the leaves on a tree -- these activities can do much to quiet us and to give ourselves a small break in a busy schedule.
We need to take care of our bodies. Being tired makes it easier for us to get sick and to develop physical problems related to stress. We need to get enough rest, eat well, and do some regular exercise.
Finally, we need to find what is causing the stress in our lives. Once we have found it, we need to begin to change that part of our lives. If we believe that we can control stress, we can begin to control our lives.
(34)
A．An unexpected event.
B．The understanding to an event.
C．The things that happen in our lives.
D．The influence of others.
Vitamins are complex ________ that the body requires in very small mounts.
A．matters
B．materials
C．particles
D．substances
A．variety
B．fraction
C．section
D．series
By "if the fuel isn't there, the spark is useless", the author means______.
A．carbohydrates, protein and fat are enough to sustain a human life
B．vitamins and minerals are virtually of no value
C．carbohydrates, protein and fat are as important as vitamins and minerals
D．without carbohydrates, protein and fat, vitamins and minerals are of no use
Natural foods, for example, are vegetables, fruit and grain which have been grown in soil that is rich in organic matter. In simple terms, this means that the soil has been nourished by unused vegetable matter, which provides it with essential vitamins and minerals. This in itself is a natural process compared with the use of chemicals and fertilizers, the main purpose of which is to increase the amount-- but not the quality -- of foods grown in commercial farming areas.
Natural foods also include animals which have been allowed to feed and move freely in healthy pastures. Compare this with what happens in the mass production of poultry: there are battery farms, for example, where thousands of chickens live crowded together in one building and are fed on food which is little better than rubbish. Chickens kept in this way are not only tasteless as food; they also produce eggs which lack important vitamins.
There are other aspects of healthy eating which are now receiving increasing attention from experts on diet. It is significant that nowadays fiber is considered to be an important part of a healthy diet. In white bread, for example, the fiber has been removed. But it is presented in unrefined flour and of course in vegetables. It is interesting to note that in countries where the national diet contains large quantities of unrefined flour and vegetables, certain diseases are comparatively rare. Hence emphasis placed on the eating of whole meal bread and more vegetables by modem experts on "healthy eating."
According to this passage, people becoming interested in natural foods because ______.
A．they are getting fired of processed foods
B．they want to change their eating habits
C．a lot of the foods they eat is not healthy
D．food experts recommend them to have natural foods
Chickens raised in poultry farms are all of the following EXCEPT that ________.
A．they are fed on food which is little better than garbage
B．they live in very crowded condition
C．the eggs they lay lack vitamins
D．they are allowed to move about and eat freely
