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.
【小題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.
【小題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.
【小題3】We can conclude from the text that _______.
A．the fat in mice's belly was reduced because of the relaxing environment
B．a(chǎn) 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
【小題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.


【小題1】D
【小題2】A
【小題3】C
【小題4】D

解析試題分析：文章大意為：本文講述了一項(xiàng)關(guān)于減肥的研究。以小老鼠的例子告訴人們應(yīng)該積極參加社交活動(dòng)多鍛煉，而不是總是呆在不動(dòng)。
【小題1】D 細(xì)節(jié)理解題；根據(jù)第二段第二句話“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.” 美國(guó)研究者認(rèn)為，社交興奮感可以把“白色脂肪”轉(zhuǎn)化為“棕色脂肪”，從而有助于減肥。
“白色脂肪”儲(chǔ)存卡路里，使人們長(zhǎng)胖，而“棕色脂肪”能夠燃燒能量，產(chǎn)生熱量。故D正確。
【小題2】A細(xì)節(jié)理解題。根據(jù)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 正確。
【小題3】C 推理判斷題。根據(jù)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 正確。
【小題4】D 主旨大意題。根據(jù)文章第一段得出;科學(xué)家研究發(fā)現(xiàn)，與在跑步機(jī)上鍛煉幾個(gè)小時(shí)相比，跟朋友一起參加社交活動(dòng)更有利于保持苗條身材。研究人員表示，社交活動(dòng)和朋友聚會(huì)能幫助提高體內(nèi)“棕色脂肪”的含量，這種脂肪可以燃燒卡路里，產(chǎn)生熱量。所以有助于減肥。選D。
考點(diǎn):健康保健類短文閱讀。

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