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听力原文：M: I'm sorry I missed the football game, but I had a terrible cold.
W: You didn't miss anything. We couldn't have played worse.
Q: What does the woman imply？
(13)
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听力原文：W: I still can't get over the show last Saturday evening. I keep haying nightmares all night.
M: So, next time before you walk into a theatre, make sure what you are going to see. I don't want to hear your complaints again and it is kind of wasting money, too.
Q: What can we infer from this conversation？
(18)
Cholesterol and Heart Disease
Do you know your cholesterol level？ Many people don't. A high level of cholesterol in the blood is an important risk factor for heart disease.
Some people say that the danger of heart disease is exaggerated. However, heart disease is a main cause of death in developed countries. Every year more than one million Americans have heart attacks, and half of them die. People with heart disease suffer chest pains that make simple activities, such as walking, shaving, or taking a shower, difficult.
Research has proven that cholesterol levels are connected with heart disease. One project in Massachusetts has studied the same group of men and women since 1948. The researchers have found that the people who have high levels of cholesterol have more heart attacks.
A natural substance in the blood, cholesterol comes from the liver. The amount of cholesterol is affected by diet and by physical qualities we inherit from our parents. One kind of cholesterol sticks fat to the walls of arteries, making them smaller and finally blocking them. It produces a condition called "hardening of the arteries," which causes heart attacks. With tiny cameras, doctors can see blood circulating through the heart valves. Angiograms (血管造影照片) are x-rays of the heart arteries.
They show fat deposits and blockages caused by high cholesterol. Heart disease begins in children as young as 3 years old. It occurs earlier in boys than in girls. Nearly half of teenagers have some fat deposits on their artery walls. Heart disease develops faster if we have high cholesterol levels and also smoke.
What is a safe level of cholesterol？ Adults have a high risk of heart attack if their cholesterol level is above 240 milligrams per deciliter (1/10 公升) of blood. Below-200 is better. In the Massachusetts study, no one with a cholesterol level below 150 has ever had a heart attack. However, about half of American adults have cholesterol levels above 200.
To lower our cholesterol level, we must change our eating habits. Anything that comes from an animal is high in fat and high in cholesterol. The American Heart Association National Cholesterol Education Program says that fat should be no more than 30 percent of our diet. Blood cholesterol levels start to fall after 2 to 3 weeks of following a low-cholesterol, low-fat diet. Dietary changes alone can result in a 10 percent reduction of the average person's cholesterol level. Aerobic exercise helps, too. Artery blockage can be reduced by as much as 40 percent through changes in diet and amount of exercise.
We must educate everyone, including children in elementary schools. We must teach them responsibility for their health through classes in nutrition and aerobic exercise. For example, the smart snack is fruit. Children must be served fruit in the school cafeteria, along with low-fat meals. Schools must send recipes home with the children. Parents must include children in planning and preparing meals and shopping for food.
Adults, including persons over the age of sixty five, can lower their cholesterol by 30 or 40 percent. It is never too late to change. One man began his health program when he was seventy: three. By the time he was seventy-seven, he had lowered his arterial blockage from 50 percent to 13 percent and his cholesterol from 320 to 145 without drugs. He went on a vegetarian diet with only 10 percent fat, plus programs to reduce stress and get more exercise.
A low-cholesterol diet that cuts out most animal products and high-fat vegetables may be unfamiliar to people. The Heart Association says to use no added fat of any kind. Don't fry food in oil. Cook it in water, vinegar, or vegetable water. Learn about grains and vegetables. Avoid egg yolks (the yellow-part of the egg). Eat potatoes, beans, low-fat vegetables, and fruit. Peop
听力原文：W: The northeast is experiencing a really terrible winter. Fuel supplies are running low and a lot of people can't even keep their houses adequately heated.
M: I guess that's why fuel prices have gone up across the nation.
Q: What do we know from the conversation？
(16)
听力原文： Architecture is to building as literature is to the printed word. The best buildings are often so well constructed that they outlast their original use. They then survive not only as beautiful objects, but as documents of the history of cultures. These achievements are never wholly the work of individuals. (29)Architecture is a social art.
The revival of classical culture brought about an entirely new age, not only in philosophy and literature but in the visual arts as well. In architecture, the principles and styles of ancient Greece and Rome were brought back to life and reinterpreted. They remained dominant until the 20th century.
Many kinds of stone are used as building materials. (30)Stone and marble were chosen for important monuments because they are not burnable and can be expected to endure. Stone architecture was often blended with stone sculpture. The use of stone has declined, however, because a number of other materials are more adaptable to industrial use.
(31) The complexity of modern life calls for a variety of buildings. More people live in mass housing and go to work in large office buildings; they spend their income in large shopping centres, send their children to many different kinds of schools, and when they are sick they go to specialized hospitals and clinics. All these different types of buildings accumulated experiences needed by their designers.
(31) By the middle of the 20th century, modern architecture, which was influenced by new technology and mass production, was dealing with increasingly complex social needs. Important characteristics of modern architectural works are expanses of glass and the use of reinforced concrete.
(30)
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