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[主观题]
Your body has ______ to stay lean when you exercise regularly.
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更多“Your body has ______ to stay l…”相关的问题
A．based on
B．taken on
C．founded on
D．built on
根据材料请回答 46～50
What Is Type 1 Diabetes？
When you eat, your body takes the sugar from food and turns it into fuel. 46 .Your body uses glucose (葡萄糖) for energy, so it can do everything from breathing air to playing a video game.But glucose cannot be used by the body on its own - it needs a hor- mone called insulin to bring it into the cells of the body.
Most people get the insulin they need from the pancreas, a large organ near the stom- ach.The pancreas makes insulin; insulin brings glucose into the cells; and the body gets the energy it needs.When a person has Type 1 diabetes, it is hecause the pancreas is not making insulin.So someone could be eating lots of food and getting all the glucose he needs, but without insulin, there .is no way for the body to use the glucose for energy. 47 .
You may have heard older people talk about having diabetes, maybe people of your grandparents' age.Usually, this is a different kind of diabetes called type 2 diabetes, or a- dult-onset diabetes.48 .
When a kid is diagnosed with juvenile (Type 1 ) diabetes, he will have that type of diabetes for his whole life.It won' t ever change to Type 2 diabetes when he gets older.
Scientists now think that a person who has juvenile diabetes was born with a certain gene or genes that made the person more likely to get the illness. 49 .Many scientists be- lieve that along with having certain genes, something else outside the person's body, like a viral infection, is necessary to set the diabetes in motion by affecting the cells in the pan- creas that make insulin.
But the person must have the gene (or genes) for diabetes to start out with this means you cannot get diabetes just from catching a flu, virus, or cold.And this type of diabetes isn't caused by eating too many sugary foods, either.Diabetes can take a long time to de- velop in a person's body sometimes months or years.Another important thing to remem- ber is that diabetes is not contagious. 50 .
A．Genes are something that you inherit from your parents, and they are in your body even before you are born.
B．This sugar-fuel is called glucose.
C．It may be possible to beat insulin resistance through lifestyle. changes.
D．You can't catch diabetes from people who have it, no matter how close you sit to them or if you kiss them.
E．The glucose can't get into the cells of the body without insulin.
F．When a person has this kind of diabetes, the pancreas usually can still make insu-lin, but the person's body needs more than the pancreas can make.
第 46 题 请选择（46）处的最佳答案
What Is Insulin-dependent Diabetes？
When you eat, your body takes the sugar from food and turns it into fuel. (46) Your body uses glucose for energy, so it can do everything from breathing air to playing a video game. But glucose can't be used by the body on its own-it needs a hormone called insulin to bring it into the cells of the body.
Most people get the insulin they need from the pancreas, a large organ near the stomach. The pancreas makes insulin; insulin brings glucose into the cells; and the body gets the energy it needs. When a person has insulin-dependent diabetes, it's because the pancreas is not making insulin. So someone could be eating lots of food and getting all the glucose he needs, but without insulin, there is no way for the body to use the glucose for energy. (47) .
You may have heard older people talk about having diabetes, maybe people of your grandparents' age. Usually, this is a different kind of diabetes called non-insulin-dependent diabetes. It can also be called Type 2 diabetes , or adult-onset diabetes. (48) .
When a kid is diagnosed with juvenile (insulin-dependent) diabetes, he will have that type of diabetes for his whole life. It won't ever change to non-insulin-dependent diabetes when he gets older.
Scientists now think that a person who has juvenile diabetes was born with a certain gene or genes that made the person more likely to get the illness. (49) Many scientists believe that along with having certain genes, something else outside the person's body, like a viral infection, is necessary to set the diabetes in motion by affecting the cells in the pancreas that make insulin.
But the person must have the gene (or genes) for diabetes to start out with-this means you can't get diabetes just from catching a flu, virus, or cold. And this type of diabetes isn't censed by eating too many sugary foods, either. Diabetes can take a long time to develop in a person's body-sometime months or years. Another important thing to remember is that diabetes is not contagious. (50)
A. Genes are something that you inherit from your parents , and they are in your body even before you're born.
B. This sugar-fuel is called glucose.
C. It may be possible beat insulin resistance through lifestyle. changes.
D. You can't catch diabetes from people who have it, no matter how close you sit to them or if you kiss them.
E. The glucose can't get into the cells of the body without insulin.
F. When a person has this kind of diabetes, the pancreas usually can still make insulin, but the person's body needs more than the pancreas can make.
(46)
AIDS means that the immune system of a person has gone wrong. The immune system is the biological system in your body which fights off diseases. This system is composed mostly of what are commonly termed "white blood cells."
These cells are the hunters in the body. When a virus, such as the common cold, invades the body, the white blood cells rush to the invader and kill it.
While these blood cells are busy killing an invader, the body's immune system is said to "be under attack." If another virus or bacteria enters the body at the same time as the white blood cells are busy fighting off an invader, the second attacker has a better chance of injuring the rest of the body's system.
Scientists found the virus that causes AIDS and named it HIV. The HIV virus attacks the white blood cells and kills them, thus preventing these white cells from carrying on their important work of killing the other invading viruses.
We cannot tell if a person has an HIV infection just by looking at him. And here lies part of the problem about the spread of HIV infection among people. For at least the first few years after a person has contracted the HIV virus, there are no indications that the person has the HIV virus in his/her bloodstream.
However, during this time the person carrying the virus can pass it onto other people through intimate sexual relations or sharing blood with them.
Then how do we know if we have HIV or not？ The answer is simple. Have an HIV blood test. This simple, painless AIDS test will take only a few minutes of your time, and, if you are at all in doubt about whether you might have contracted the HIV virus, it is a life-saving endeavor.
【C1】
A．much
B．many
C．few
D．little
根据下列文章,请回答 36～40 题。
The Body Clock
Why is it that flying to New York from London will leave you feeling less tired than flying to London from New York？ The answer may be a clear case of biology not being able to keep up with technology.
Deep inside the brain there is a 'clock' that governs every aspect of the body's functioning: sleep and wake cycles, levels of alertness, performance, mood, hormone levels, digestion, body temperature and so on. It regulates all of these functions on a24-hour basis and is called the biological clock.
This body clock programmes us to be sleepy twice a day, between 3-5 am and again between 3-5 pro. Afternoon tea and nap are all cultural responses to our natural biological sleepiness in the afternoon.
One of the major causes of the travellers' malady known as jet lag is the non-alignment of a person's internal body clock with clocks in the external world. Crossing different time zones confuses the biological clock, which then has to adjust to the new time and patterns of light and activity. To make matters more complex, not all internal body functions adjust at the same rate. So your sleep/wake may adjust to a new time zone at one rate, while your temperature adjusts at a different pace. Your digestion may be on a different schedule altogether.
Though we live in a 24-hour day, the natural tendency of the body clock is to extend our day beyond 24 hours. It is contrary to our biological programming to 'shrink' our day.
That is why traveling in a westward direction is more body-clock friendly than flying east. NASA studies of long haul pilots showed that westward travel was associated with significantly better sleep quantity and quality than eastward flights.
When flying west, you are 'extending your day, thus traveling in the natural direction of your internal clock. Flying eastward will involve 'shrinking' or reducing your day and is in direct opposition to your internal clock's natural tendency.
One of the more common complaints of travelers is that their sleep becomes disrupted. There are many reasons for this: changing time zones and schedules, changing light and activity levels, trying to sleep when your body clock is programmed to be awake, disruption of the internal biological clock and working longer hours.
It is often suggested that you adjust your watch as soon as you board a plane, supposedly to try to help you adjust to your destination's schedule as soon as you arrive. But it can take the body clock several days to several weeks to fully adjust to a new time zone. So, our body clock truly can 'govern' us.
第 36 题 The role of the body clock is to
A．enable us to sleep 6 hours a day.
B．help us adapt to a 24-hour cycle.
C．regulate the body's functions.
D．interfere with the body's functions.
【B1】
A．much
B．many
C．few
D．little
The body can choose what it needs from the nutrients in the【B6】. Your body sees to it【B7】each organ gets the right amount of nutrients it needs. However, if the diet lacks some nutrients, the body has no【B8】of getting them.
Your body works twenty four hours a day. It is always building itself【B9】, and getting rid of waste products. It needs a constant【B10】of nutrients to do its job. When it receives the nutrients, it sends them【B11】they are needed.
Nutrients working with other nutrients【B12】the difference in our health and well-being. No single nutrient can work properly【B13】. For example, it takes calcium to build strong bones, but that is only the【B14】. Without vitamin D, the calcium can not be taken【B15】the body. The use of protein is another【B16】. Protein forms part of every cell and all the fluids that【B17】in and around the cells. However, it takes vitamin C to help make the fluids between the cells.【B18】vitamin C, the protein could not do its job.
The foods you eat keep you.【B19】for today, but they also build your body for a lifetime. They keep you well today, tomorrow, and【B20】.
【B1】
A．counted
B．accounted
C．numbered
D．measured
听力原文： Recently the term "health" has come to have a wider meaning than it used to. It no longer means just the absence of illness. Today, health means the well-being of your body, your mind and your relationships with other people. This new concept of health is closely related to another term--quality of life. Quality of life is the degree of overall satisfaction that a person gets from life.
Why has the emphasis of health shifted from the absence of disease to a broader focus on the quality of a person's life？ One reason for this has to do with the length and conditions of life that people can now expect. Medical advances have made it possible for people today to live longer, healthier lives. Imagine for a moment that you were born in the year 1900；you could have expected on average to live until about the age of 47. In contrast, if you were born in the year 1999, you could expect to live to the age of 75 or be older.
(30)
A．Different interpretations of the term “health.”
B．Improving the quality of life
C．The importance of health to quality living.
D．People's expectations of a long and healthy life.
听力原文： Many people catch a cold in the springtime or fall. It makes us wonder... if scientists can send a man to the moon, why can't they find a cure for the common cold. The answer is easy. There see actually hundreds of kinds of cold viruses out there. You never know which one you will get, so there isn't a cure for each one.
When a virus attacks your body, your body works hard to get rid of it. Blood rushes to your nose. You feel terrible because you can't breathe well, but your body is actually "eating" the virus. Your temperature rises and you get a fever, but the heat of your body is killing the virus. You also have a ninny nose to stop the virus from getting to your cells. You may feel miserable, but actually your wonderful body is doing everything it can to kill the cold.
Different people have different methods to cure colds. In the United States and some other countries, for example, people might eat chicken soup to feel better. Some people take hot baths and drink warm liquids. Other people take medicines to stop the fever, headache, and runny nose.
There is one interesting tiring to note—same scientists say taking medicines when you have a cold is actually bad for you. The virus stays in you longer because your body doesn't have a way to fight it and kill it. Bodies can do an amazing job on their own, and medicines may affect the body's work. However, others can hardly believe it. So, there is a joke on taking medicine when you have a cold. It goes like this: It takes about 1 week to get over a cold if you don't take medicine, but only 7 days to get over a cold if you take medicine.
(26)
A．It has to suffer the misery passively.
B．It will produce more cells.
C．It will rebuild its systems.
D．It will work hard to kill the cold.
