【单选题】
TheBest Way to Reduce Your Weight
You hear this: "No wonder you are fat.All you ever do is eating." You feel sad: "I skip my breakfast and supper. I run every morning and evening. What else can I do "Basically you can do nothing. Your genes, not your life habits, determine your weight and your body constantly tries to maintain it.
Albert Stunkard of the University of Pennsylvania found from experiments that, "80 percent of the children of two obese parents become obese, as compared with no more than 14 percent of the offspring of two parents of normal weight."
How can obese people become normal or even thin through dieting Well, dieting can be effective, but the health costs are tremendous. Jules Hirsch, a research physician at Rockefeller University, did a study of eight fat people. They were given a liquid formula providing 600 calories a day.After more than 10 weeks, the subjects lost 45kg on average.But after leaving the hospital, they all regaineD、The results were surprising by metabolic measurement, fat people who lost large amounts of weight seemed like they were starving. They had psychiatric problems. They dreamed of food or breaking their diet. They were anxious and depressed; some were suicidal. They hid food in their rooms. Researchers warn that it is possible that weight reduction doesn’t result in normal weight, but in an abnormal state resembling that of starved non-obese people.
Thin people, however, suffer from the opposite: They have to make a great effort to gain weight.Ethan Sims, of the University of Vermont, got prisoners to volunteer to gain weight. In four to six months, they ate as much as they coulD、They succeeded in increasing their weight by 20 to 25 percent.But months after the study ended, they were back to normal weight and stayed there.
This did not mean that people are completely without hope in controlling their weight. It means that those who tend to be fat will have to constantly battle their genetic inheritance if they want to significantly lower their weight.
The findings also provide evidence for something scientists thought was true--each person has a comfortable weight range. The range might be as much as 9kg. Someone might weigh 60-69kg without too much effort.But going above or below the natural weight range is difficult. The body resists by feeling hungry or full and changing the metabolism to push the weight back to the range it seeks.
What did Jules Hirsch do in his studyA．He let the eight fat people skip supper.
B．He let the eight fat people skip breakfast.
C．He let the eight fat people run every morning and evening.
D．He gave the eight fat people a liquid formula providing 600 calories a day.
You hear this: "No wonder you are fat.All you ever do is eating." You feel sad: "I skip my breakfast and supper. I run every morning and evening. What else can I do "Basically you can do nothing. Your genes, not your life habits, determine your weight and your body constantly tries to maintain it.
Albert Stunkard of the University of Pennsylvania found from experiments that, "80 percent of the children of two obese parents become obese, as compared with no more than 14 percent of the offspring of two parents of normal weight."
How can obese people become normal or even thin through dieting Well, dieting can be effective, but the health costs are tremendous. Jules Hirsch, a research physician at Rockefeller University, did a study of eight fat people. They were given a liquid formula providing 600 calories a day.After more than 10 weeks, the subjects lost 45kg on average.But after leaving the hospital, they all regaineD、The results were surprising by metabolic measurement, fat people who lost large amounts of weight seemed like they were starving. They had psychiatric problems. They dreamed of food or breaking their diet. They were anxious and depressed; some were suicidal. They hid food in their rooms. Researchers warn that it is possible that weight reduction doesn’t result in normal weight, but in an abnormal state resembling that of starved non-obese people.
Thin people, however, suffer from the opposite: They have to make a great effort to gain weight.Ethan Sims, of the University of Vermont, got prisoners to volunteer to gain weight. In four to six months, they ate as much as they coulD、They succeeded in increasing their weight by 20 to 25 percent.But months after the study ended, they were back to normal weight and stayed there.
This did not mean that people are completely without hope in controlling their weight. It means that those who tend to be fat will have to constantly battle their genetic inheritance if they want to significantly lower their weight.
The findings also provide evidence for something scientists thought was true--each person has a comfortable weight range. The range might be as much as 9kg. Someone might weigh 60-69kg without too much effort.But going above or below the natural weight range is difficult. The body resists by feeling hungry or full and changing the metabolism to push the weight back to the range it seeks.
What did Jules Hirsch do in his studyA．He let the eight fat people skip supper.
B．He let the eight fat people skip breakfast.
C．He let the eight fat people run every morning and evening.
D．He gave the eight fat people a liquid formula providing 600 calories a day.
正确答案
正确答案正在加载...
答案解析
答案解析正在加载...
【单选题】 It is out of the question that the inspector will come tomorrow.
- A. impossible
- B. possible
- C. probable
- D. likely
正确答案
正在加载...
答案解析
正在加载...
【单选题】What’s killing theBatsFirst it was bees. Now it is bats.Biologists inAmerica are working hard to discover the cause of the mysterious deaths of tens of thousands of bats in the northeastern part of the country. Most of the bats affected are the common little brown bats (Myotis lucifugus), but other species, such as the long-eared bat, the small-footed hat, the eastern pipistrelle, and the Indiana bat have also been affecteD、In some caves, more than 90 percent of the bat populations have dieD、One possibility is disease.
A、white fungus(真菌)known as fusarium has been found on the noses of both living and dead bats. However, scientists don’t know If the fungus is the primary cause of death, a secondary cause of death, or not a cause at all, but the result of some other conditions. Another possible cause is a lack of fooD、For example, bats typically eat a large number of moths(蛾), and in some states such as New York, the number of moths has been declining in recent years. If bats can’t eat enough food, they starve to death.Still other scientists believe that global warming is to blame. Warmer temperatures in recent years have been waking up hibernating(冬眠)bats earlier than usual. If bats break their hibernation at the wrong time, they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the consequences.Bats are an important predator of mosquitoes; a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops. If there aren’t enough bats, damage will be great from the insects they eat While bats live a long time for their size－the little brown bat can live for more than 30 years－a female bat has only one baby per year, so bat populations grow slowly. Many bat species in the United States are already protected or endangereD、How can you helpDo not disturb sleeping or nesting bats. If you discover bate that seem to be sick or that are dead, contact your local Fish ＆ WildlifeDepartment with the details. However, be careful not to touch the animals. What is the main idea of this passage
A、All species of bats in NorthAmerica are dying.
B．Scientists already know the cause of the deaths of bats
C．The bat deaths are a serious problem.
D．There are many possible causes of the deaths of bats.
A、white fungus(真菌)known as fusarium has been found on the noses of both living and dead bats. However, scientists don’t know If the fungus is the primary cause of death, a secondary cause of death, or not a cause at all, but the result of some other conditions. Another possible cause is a lack of fooD、For example, bats typically eat a large number of moths(蛾), and in some states such as New York, the number of moths has been declining in recent years. If bats can’t eat enough food, they starve to death.Still other scientists believe that global warming is to blame. Warmer temperatures in recent years have been waking up hibernating(冬眠)bats earlier than usual. If bats break their hibernation at the wrong time, they might not find their expected food sources. The weather might also turn cold again and weaken or kill the bats.Scientists might not agree on the causes of the bat die-off, but they do agree on the consequences.Bats are an important predator of mosquitoes; a single brown bat can eat 1,000 or more insects in an hour. They also eat beetles and other insects that damage plant crops. If there aren’t enough bats, damage will be great from the insects they eat While bats live a long time for their size－the little brown bat can live for more than 30 years－a female bat has only one baby per year, so bat populations grow slowly. Many bat species in the United States are already protected or endangereD、How can you helpDo not disturb sleeping or nesting bats. If you discover bate that seem to be sick or that are dead, contact your local Fish ＆ WildlifeDepartment with the details. However, be careful not to touch the animals. What is the main idea of this passage
A、All species of bats in NorthAmerica are dying.
B．Scientists already know the cause of the deaths of bats
C．The bat deaths are a serious problem.
D．There are many possible causes of the deaths of bats.
正确答案
正在加载...
答案解析
正在加载...
【单选题】
David Jones and His Salary
Computer programmerDavid Jones earns ￡35,000 a year designing new computer games, yet he cannot find a bank prepared to let him have a cheque card (支票卡). Instead, he has been told to wait another two years, until he is 18.
The 16-year-old works for a small firm In Liverpool, where the problem of most young people of his age is finding a joB、David’s firm releases two new games for the home computer market each month.
ButDavid’s biggest headache is what to do with his money.Despite his salary, earned buy inventing new programs, with bonus payments and profit-sharing, he cannot drive a car, buy a house, or obtain credit cards (信用卡).
He lives with his parents in Liverpool. His company has to pay ￡150 a month in taxi fares to get him the five miles to work and back every day becauseDavid cannot drive.
David got his job with the Liverpool-based company four months ago, a year after leaving school and working for a time in a computer shop. "I got the job because the people who run the firm knew I had already written some programs," he saiD、
"I suppose ￡35,000 sounds a lot but I hope it will come to more than that his year." He spends some of his money on records and clothes, and gives his mother ￡20 a week.But most of his spare time is spent working.
"Unfortunately, computing was not part of our studies at school," he saiD、"But I had been studying it in books and magazines for four years in my spare time. I knew what I wanted to do and never considered staying on at school. Most people in this business are fairly young, anyway."
David added: "I would like to earn a million and I suppose early retirement (退休) is a possibility. You never know when the market might disappear.\
He left school because
A、he did not enjoy school.
B、he wanted to work with computers and staying at school did not help him.
C、he was afraid of getting too old to start computing.
D、he wanted to earn a lot of money.
Computer programmerDavid Jones earns ￡35,000 a year designing new computer games, yet he cannot find a bank prepared to let him have a cheque card (支票卡). Instead, he has been told to wait another two years, until he is 18.
The 16-year-old works for a small firm In Liverpool, where the problem of most young people of his age is finding a joB、David’s firm releases two new games for the home computer market each month.
ButDavid’s biggest headache is what to do with his money.Despite his salary, earned buy inventing new programs, with bonus payments and profit-sharing, he cannot drive a car, buy a house, or obtain credit cards (信用卡).
He lives with his parents in Liverpool. His company has to pay ￡150 a month in taxi fares to get him the five miles to work and back every day becauseDavid cannot drive.
David got his job with the Liverpool-based company four months ago, a year after leaving school and working for a time in a computer shop. "I got the job because the people who run the firm knew I had already written some programs," he saiD、
"I suppose ￡35,000 sounds a lot but I hope it will come to more than that his year." He spends some of his money on records and clothes, and gives his mother ￡20 a week.But most of his spare time is spent working.
"Unfortunately, computing was not part of our studies at school," he saiD、"But I had been studying it in books and magazines for four years in my spare time. I knew what I wanted to do and never considered staying on at school. Most people in this business are fairly young, anyway."
David added: "I would like to earn a million and I suppose early retirement (退休) is a possibility. You never know when the market might disappear.\
He left school because
A、he did not enjoy school.
B、he wanted to work with computers and staying at school did not help him.
C、he was afraid of getting too old to start computing.
D、he wanted to earn a lot of money.
正确答案
正在加载...
答案解析
正在加载...
【单选题】 These programmes are of immense value to old people.
A．natural
B．fatal
C．tiny
D．enormous
A．natural
B．fatal
C．tiny
D．enormous
正确答案
正在加载...
答案解析
正在加载...
发布评论 查看全部评论