A team of researchers at the University of California studied the effects of early exercise on adult physical activity, body mass and eating. They found that early-age exercise in mice has positive effects on adult levels of voluntary exercise in addition to reducing body mass.
“These results may have an effect on the importance of regular physical education in elementary and middle schools,” said Theodore Garland, a professor of biology, who led the research project. “If kids exercise regularly through their school years, then they may be more likely to exercise as adults, which could have far-reaching positive effects on human health and well-being.”
Although the positive effects of early-life exercise lasted for only one week, it is important to note that one week in the life of a mouse is the same as about nine months for humans. “Our results suggest that any positive effects of early-life exercise on adult exercise will need to be kept up if they are to be long-lasting.”
His team of researchers found, too, that all mice that had access to early exercise were lighter in weight than non-exercised mice.
Garland explained that, in general, exercise will stimulate appetite sooner or later. However, it is possible that certain types of exercise, done for certain periods of time or at certain light levels, might not stimulate appetite much, if at all, at least in some individuals.
“If we could understand what sorts of exercise these might be, then we might be able to tailor exercise recommendations in a way that would bring the benefits of exercise without increase in appetite, leading to a better chance of weight loss,” he said.
1. How long do the positive effects of early-life exercise last for a mouse?
| A．One day | B．One week |
| C．One month | D．Nine months |
| A．More study is needed to better understand the effects of different types of exercise. |
| B．Early-life exercise has life-long positive effects on people |
| C．Kids should be encouraged to do exercise as early as possible to ensure physical health. |
| D．The new study on mice mainly focused on how exercise affects appetite. |
| A．decline | B．improve | C．vary | D．harm |
| A．New ways to fight against being overweight. |
| B．The positive effects of mice. |
| C．The possible risks of doing exercise. |
| D．The positive effects of early- life exercise. |
2 . Parents whose children show a special interest in a sport feel very difficult to make a decision about their children’s careers. Should they allow their children to train to become top sports men or women? For many children it means starting schoolwork very young, and going out with friends and other interests have to take a second place. It’s very difficult to explain to a young child why he or she has to train five hours a day, even at the weekend, when most of his or her friends are playing.
Another problem is of course money. In many countries money for training is available from government for the best young sportsmen and women. If this help can not be given, it means that it is the parents who have to find the time and the money to support their child’s development and sports clothes, transport to competitions, special equipment, etc.
Many parents are worried that it is dangerous to start serious training in a sport at an early age. Some doctors agree that young muscles may be damaged by training before they are properly developed. Professional (专业的) trainers, however, believe that it is only by training young that you can reach the top as a successful sports person. It is clear that very few people do reach the top, and both parents and children should be prepared for failure even after many years of training.
1. This article is probably taken from ________.| A．a letter | B．an advertisement |
| C．a personal diary | D．a newspaper article |
| A．feel uncertain if they should let their children train to be sportsmen or women |
| B．try to get financial support from the government for their children’s training |
| C．have to get medical advice from doctors about training methods |
| D．prefer their children to be trained as young as possible |
| A．When young, sports men or women won’t have much time for their schoolwork |
| B．Early training may damage their muscles. |
| C．Most children may become professional sports men or women after a long period of training. |
| D．It’s very expensive for parents to support their child’s development in sports. |
| A．Most people | B．Some people |
| C．Only a few people | D．No people |
3 . Discover
Newsmagazine of science devoted to the wonders an stories of modern science, written for the educated general reader. Published by Disney Magazine Publishing Co., Discover tells many of the same stories professionals read in Scientific American. A truly delightful family science magazine, each issue（每期） brings to light new and newsworthy topics to make dinnertime and water-cooler conversations interesting.
Cover Price: $59.88
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Self
Published by Conde Nast Publications Inc., Self is a handbook devoted to women’s overall physical and mental health. Every issue contains usable articles such as “Style Lab”, in which wearable clothes are mixed and matched on non-models and the “Eat-right Road Map”, with tips on how to eat properly.
Cover Price: $35.86
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InStyle
InStyle is a guide to the lives and lifestyles of the world’s famous people. The magazine covers the choices people make about their homes, their clothes and their free time activities. With photos and articles, it opens the door to these people’s homes, families, parties and weddings, offering ideas about beauty, fitness and in general, lifestyles. Publisher: The Time Inc. Magazine Company.
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Wired
This magazine is designed for leaders in the field of information engineering including top managers and professionals in the computer, business, design and education industries. Published by Conde Nast Publications Inc., Wired often carries articles on how technology changes people’s lives.
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Issues: 10 issues/12months
1. Which of the following magazines is published monthly?| A．Discover |
| B．Self |
| C．InStyle |
| D．Wired |
| A．Wired and InStyle |
| B．Discover and InStyle |
| C．Self and Discover |
| D．Self and Wired |
| A．InStyle |
| B．Wired |
| C．Discover |
| D．Self |
| A．offer advice to ordinary women on clothes |
| B．show how a woman can become famous |
| C．introduce places with the best food |
| D．discuss ways of training models |
| A．InStyle |
| B．Self |
| C．Wired |
| D．Discover |
