Question

Keeping a busy social life among lots of friends may keep people thinner than spending hours doing some exercises, according to scientists. They say that socializing and meeting with friends help increase levels of brown fat in the body which burns calories to produce heat.

Living in an exciting social environment was found to reduce fat in mice's belly by half over four weeks, even if they ate more. US researchers say that social excitement aids weight loss by turning white fat into brown. White fat stores calories and makes us fatter, while brown burns energy to produce heat. Turning white fat into brown is extremely difficult, normally requiring long- term stay in cold conditions or exciting part of the body's nervous system.

However, scientists from Ohio State University now think that having a busy social life is an even more effective way of changing white fat into brown. The team came up with their theory by studying the effects of various living environments on mice. Those, who lived alongside a greater number of mice, had more space and toys to excite themselves and then lost far more weight over the course of the study than their “couch potato" fellows.

Study author, Dr Matthew During, whose team's findings appear in the journal Cell Metabolism, said, "I'm still amazed at the degree of fat loss that occurs." Explaining how new technology had threatened face-to-face socializing, he added, "It's not just a sedentary(久坐的) lifestyle and high calorie foods, but an increasing lack of social activities." Co-author Dr Lei Cao said，"Loneliness is a potential factor for cancer and death; it's equal to cigarette smoking to a certain extent. Social activities are very vital.

1.What information can we get from the first two paragraphs?

A. Brown fat stores calories and makes us fatter

B. It doesn't take long to turn white fat into brown.

C. Social excitement helps gain more weight

D. Brown fat can burn energy to produce heat.

2.Which of the following statement does the text support?

A. Levels of brown fat can be increased by socializing.

B. The mice lacking social life lose more weight.

C. The research findings haven't been published so far.

D. Dr Matthew During wasn't convinced of the result.

3.We can conclude from the text that        _______.

A. the fat in mice's belly was reduced because of the relaxing environment

B. a sedentary lifestyle and high calories foods influence people's social life

C. surfing the Internet may influence people's face-to-face communication

D. cancer and death are mainly caused for lack of social life

4.What’s the main idea of the text?

A. Brown fat is beneficial to people's health.

B. Socializing is unnecessarily important in people's daily life.

C. White fat can be changed into brown fat.

D. Socializing contributes to people's losing weight.

Answer

1.D

2.A

3.C

4.D

【解析】

试题分析：文章大意为：本文讲述了一项关于减肥的研究。以小老鼠的例子告诉人们应该积极参加社交活动多锻炼，而不是总是呆在不动。

1.D 细节理解题；根据第二段第二句话“US researchers say that social excitement aids weight loss by turning white fat into brown. White fat stores calories and makes us fatter, while brown burns energy to produce heat.” 美国研究者认为，社交兴奋感可以把“白色脂肪”转化为“棕色脂肪”，从而有助于减肥。

“白色脂肪”储存卡路里，使人们长胖，而“棕色脂肪”能够燃烧能量，产生热量。故D正确。

2.A细节理解题。根据第二段“White fat stores calories and makes us fatter, while brown burns energy to produce heat. Turning white fat into brown is extremely difficult, normally requiring long- term stay in cold conditions or exciting part of the body's nervous system.”可知A 正确。

3.C 推理判断题。根据最后一段“Explaining how new technology had threatened face-to-face socializing, he added, "It's not just a sedentary(久坐的) lifestyle and high calorie foods, but an increasing lack of social activities.”可知C 正确。

4.D 主旨大意题。根据文章第一段得出; 科学家研究发现，与在跑步机上锻炼几个小时相比，跟朋友一起参加社交活动更有利于保持苗条身材。研究人员表示，社交活动和朋友聚会能帮助提高体内“棕色脂肪”的含量，这种脂肪可以燃烧卡路里，产生热量。所以有助于减肥。选D。

考点:健康保健类短文阅读。