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听力原文： New studies say that eating chocolate may be good for your heart. Research shows

that eating chocolate may reduce the chance of developing heart disease by helping blood vessels remain clear and open.

Chocolate is produced from beans that contain large amounts of natural substances called flavonoids. Flavonoids have been shown to protect the heart and the blood vessels from damage.

Recent studies have linked foods that contain flavonoids with a reduced chance of developing heart disease. These foods include tea, red wine, apples, peanuts and chocolate.

Research has shown that forty grams of milk chocolate contain about four-hundred milligrams of flavonoids. That is about the same amount as in a glass of red wine. The same amount of dark choc-olate contains more than eight-hundred milligrams of flavonoids. That is about the same amount as in a cup of black tea.

A study by researchers at the University of Scranton in Pennsylvania found that the flavonoids in chocolate are more powerful than some vitamins in limiting the damage from fats in the blood. A German study recently showed that the flavonoids in chocolate also could stop damage to blood vessel walls. And a University of California study showed that flavonoids from chocolate produce nitric acid in the blood. Nitric acid helps protect the walls of blood vessels.

A study by Cesar Fraga of the University of Buenos Aires in Argentina confirmed healthy activity in the blood after eating dark chocolate. Carl Keen of the University of California at Davis also carried out studies about flavonoids. The studies showed that foods high in flavonoids may help stop thickening of the blood that can lead to heart attacks or strokes. Mister Keen gave water, cocoa or non-alcoholic red wine to groups of ten men and women. Researchers tested their blood a few hours later. Both the wine and cocoa delayed the time it took for the blood to become solid. Only the cocoa protected platelets in the blood from becoming too sticky and breaking.

What is the main idea of the passage？

A．Eating chocolate might help you lose weight.

B．Eating chocolate might help you develop heart attacks.

C．Eating chocolate is a bad option for fat people.

D．Eating chocolate may help you prevent heart disease.

答案

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发布时间：2020-10-22

更多“听力原文： New studies say that eating chocolate may be good for your heart. Research shows”相关的问题

第1题

听力原文： Suitable for new or soon to be promoted management, the emphasis in this program

me is on people management. We'll give you clear guidelines, explicit case studies, exercises, presentations and evening syndicate work. The focus is on reality and what can and cannot be done in the actual business environment.

(16)

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第2题

听力原文：For the last 12 of his 40 years of teaching, Professor Thomas Armstrong has serve

听力原文： For the last 12 of his 40 years of teaching, Professor Thomas Armstrong has served as Chair of the History Department. He has written books on many topics, such as Liberals vs. Conservatives and 18th Century Canadian History. He is an expert on early Canadian Studies and has a bachelor's degree from Antioch University. Even after 40 years, Professor Armstrong continues to lead the way for future academics. Join me in welcoming our distinguished guest speaker, Professor Thomas Armstrong.

What is the purpose of this speech？

A．To inform. students

B．To introduce a speaker

C．To announce a new class

D．To announce a retirement

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第3题

听力原文：Many of us believe that a person's mind becomes less active as he grows older.But

听力原文： Many of us believe that a person's mind becomes less active as he grows older. But this is not true, according to Dr. Lissy F. Javik, professor of psychiatry at the University of California, Los Angeles. Dr. Jarvik has studied the mental functioning of aging persons for several years. For example, one of her studies concerns 136 pairs of identical twins, who were first examined when they were already 60 years old. As Dr. Jarvik's continued the study of the twins into their 70s and 8Os, their minds did not generally decline as was expected.

However, there was some decline in their psychomotor speed. This means that it took them longer to accomplish mental tasks than it used to. But when speed was not a factor, they last very little intellectual ability over the years. In general, Dr. Jarvik's studies have shown that there is no decline in knowledge or reasoning ability. This is true not only into the 30s and 40s but also into 60s and 70s as well.

As for learning new things, and ability to remember, studies by Dr. Jarvik and others show that the old are equal to the young. It is true that older people themselves often complain that their memory is not as good as it once was. However, much of what we call "loss of memory" is not that at all. There usually was incomplete learning in the first place. For example, the older person perhaps had trouble hearing or poor vision, or inattention, or was trying to learn the new thing at a speed that was too fast.

In the cases where the older person's mind really seems to decay, it is not necessarily a sign of a decay due to old age or "senility". Often it is simply a sign of a depressed emotional state. The depression usually can be counteracted by counseling, therapy with a psychologist, or medications which fight depression.

(30)

A．It remains as active as ever.

B．It tends to be less active.

C．It loses the ability to reason.

D．It functions well in learning new things.

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第4题

听力原文：Good morning, and welcome to American studies 101. I would like to begin this sem

听力原文： Good morning, and welcome to American studies 101. I would like to begin this semester by discussing the region of the United States known as the Northeast. This region includes twelve states and a small area called the District of Columbia that is the home of the national government.

The Northeast is a very important part of the United States, for although it covers only about six percent of the nation's geographical area, it contains approximately one-fourth of the country's population. New York, the most popular city in the United States, and several other large cities are located in this region.

Why are these twelve states so important？ In the first place, the Northeast was one of the first sections of the country to be settled by Europeans. Busy cities developed there when most of America was still a sparsely settled wilderness. Many crucial events in the nation's early history took place there. I'll be describing some of those events Wednesday in my second lecture.

Today the Northeast is a great manufacturing and trading region. Thousands of factories produce a wide variety of goods and provide other regions of the country, with items they need. Many large manufacturing firms have their central headquarters here. Some of the country's largest banks, investment agencies, and publishing houses are found in the Northeast. Several of its cities are noted for their fine museums. Some of the country's best known colleges and universities are also located in this region.

Finally the Northeast is the principal location for much of the country's international trade. In the heart of this region New York city is the home of the United Nations.

(33)

A．On the first day of class.

B．At the end of the first week of classes.

C．Halfway through the semester.

D．Just before the final examination.

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第5题

听力原文：Some mental health research has linked depression in women with lower weight in t

听力原文： Some mental health research has linked depression in women with lower weight in their babies during the first year of life. They studied 632 women from small villages. The women were in good physical health and in the last three months of pregnancy.

The study identified 160 of the women, or one in four, as depressed. They always felt sad or tired. They had problems eating or sleeping. They felt guilty and thought about killing themselves.

The researchers compared these women with 160 others who were not depressed. Health workers then weighed and measured the babies of both groups at birth. Re-examinations took place at two, six and twelve months of age. The health workers also re-examined the mental health of the mothers.

Babies whose mothers remained depressed grew less than the babies of the other women. The babies of the depressed mothers were also more likely to get sick. Earlier studies showed that ten to fifteen percent of pregnant women and new mothers in Western nations suffer from depression. Other studies in South Asia have found that depression affects almost two times as many women in developing countries.

A new program will be started to help these new mothers. In the program health workers will visit new mothers for up to a year. The workers offer advice about things like health and cleanliness. The health workers will also listen to the mother's problems and suggest some easy things at first that she can do for her baby. The program will be tested for three years to see how well it succeeds.

(23)

A．How depression affects women's health.

B．How depression in mothers affects their babies' weight.

C．How to get rid of depression.

D．How to better feed low weight babies.

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第6题

听力原文：At the United Nations, assistant secretary general for peacekeeping Hedi Anaby sa

听力原文： At the United Nations, assistant secretary general for peacekeeping Hedi Anaby says preparations for voting in East Timor must go forward quickly. Mr. Anaby says voters must be officially recorded by June 22nd for the election to be held on August 30th. Voters will elect an 88- member National Assembly which will write a constitution. Mr. Anaby has told the UN Security Council that it will be difficult to record voters by the required dates. Als0 East Timorese independence leader Xanana Gusmao has again said that he will not seek the presidency of the new country. He said he will help East Timor in other ways. A presidential election is expected next year.

Q: According to Hedi Anaby, what must go forward quickly in East Timor？

(25)

A．preparations for a strike.

B．arrangement for a holiday.

C．preparations for voting.

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第7题

听力原文：A new study suggests that very young children who watch a lot of television may h

听力原文： A new study suggests that very young children who watch a lot of television may have attention problems later in school.

Children with attention problems cannot sit still or control their actions. They talk too much, lose things, forget easily and are not able to finish tasks.

The new study tested the idea that television watching by very young children is linked to attention problems by the age of seven. It involved more than 1,300 children. There were two groups of children, aged one and three. Researchers asked the parents how often the children watched television. The parents also described their children's actions at the age of seven using a method that can tell if someone suffers from attention problems.

The children who watched a lot of television at an early age were most likely to have attention problems. Every hour of watching television increased the chances of having attention problems by about ten percent. For example, children who watched three hours a day were thirty percent more likely to have attention problems than those who watched no television.

One of the researchers said there are other reasons why children should not watch television. Earlier studies have linked it with children becoming too fat and too aggressive. Other experts say the new study is important, but more work needs to be done to confirm the findings and better explain the cause and effect.

(30)

A．Attention problems.

B．Participating problems.

C．Communication problems.

D．Speaking problems.

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第8题

听力原文：Most people think that the older you get, the harder it is to learn, a new langua

听力原文： Most people think that the older you get, the harder it is to learn, a new language. That is, they believe that children can learn more easily and efficiently than adults. Thus, at some point in our lives, maybe around age 12 or 13, we lose the ability to learn languages well. Is this idea a fact or myth？

Is it true that children can learn a foreign language more efficiently than adults？ On the contrary, research studies suggest that the opposite may be true. One report, on 2,000 Danish children studying Swedish, concluded that the teenagers learned more in less time than the younger children. Another report on Americans learning Russian showed a direct improvement of ability over the age range tested; that is, the ability to learn increased as the age increased, from childhood to adulthood.

There are several possible explanations for these findings. First, adults know more about the world and therefore are able to understand meanings more easily than children. Moreover, adults can use logical thinking to help themselves see patterns in the language. Finally, adults have more self-control than children.

(30)

A．Teenagers are more efficient in learning.

B．Children learn languages more easily than adults.

C．Adults are more logical than children.

D．The ability to learn languages increases with age.

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第9题

听力原文：Man: Suitable for new or soon to be promoted management, the emphasis in this pro

gramme is on people management. We'll give you clear guidelines, explicit case studies, exercises, presentations and evening syndicate work. The focus is on reality and what can and cannot be done in the actual business environment.

&8226;You will hear another five recordings.

&8226;For each recording, decide which topic the speaker is talking about.

&8226;Write one letter (A--H) next to the number of the recording.

&8226;Do not use any letter more than once.

&8226;You will hear the five recordings twice.

A training courses

B website designers

C conference venues

D security systems

E promotional packages

F after-dinner speakers

G pension schemes

H transportation systems

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第10题

听力原文：Human beings are cutting down the world's rain forests at the rate of 20 hectares

听力原文： Human beings are cutting down the world's rain forests at the rate of 20 hectares a minute (31) . Every year, 30 million hectares of rain forests are destroyed. And at this rate, most of the world's rain forests will disappear very soon.

The forests are cut down sometimes for wood, sometimes for farms so that crops and vegetables can be planted and sometimes to make way for roads. But the forests do not re-grow. The soil is very thin and it is soon washed away by the rain. The land is then too poor for the forests to begin to grow again.

There are a number of good reasons for saving the rainforests. Several important drugs in hospitals have come from the rain forests. Also they produce food. The rain forests are rich in wildlife, too. They cover less than 10% of the world's land, but they contain 40%～50%of the world's species of plants and animals (29) . The trees supply oxygen. If the rain forests are destroyed, this will change the world's weather (30) . Temperatures will go up, sea levels will rise and there will be changes in rain and snowfall.

Today, research studies in forests in Panama, New Guinea and Indonesia may help us to find solutions to save the world's rain forests.

(30)

A．15%.

B．10%.

C．About 50%.

D．Nearly 30%.

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第11题

听力原文：Today we're going to talk about shyness and discuss recent research on ways to he

听力原文： Today we're going to talk about shyness and discuss recent research on ways to help children learn to get along with others socially.

Many people consider themselves shy. In fact, forty percent of people who took part in our survey said they were shy--that's two out of every five people. And there are studies to indicate that the tendency toward shyness may be inherited. But certain timid children doesn't mean that they are bound to be shy forever. There is something parents, teachers, and the children themselves can do to overcome this tendency--and even to prevent it.

Our researchers found that if parents gently push their shy children to try new things, they can help these children become less afraid and less inhibited. Another way to help shy children is to train them in social skills. For example, there are special training programs where children are taught things like looking at other children while talking to them, talking about others' interests, and even smiling.

These groups have been very successful in giving shy children a place to feel safe and accepted, and building up their self-esteem.

(33)

A．Showing children how to behave.

B．Helping children overcome shyness.

C．Several causes of children's shyness.

D．How timid children become shy adults.

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