2020年7月英语六级听力篇章2原文：基因遗传(网友版)

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2020年上半年英语六级真题及答案大汇总
题型	英语六级作文真题范文	英语六级翻译真题答案
	英语六级听力真题答案	英语六级阅读真题答案
	英语六级真题解析汇总	英语六级考试答案汇总

　　Passage 2

　　Public interest was aroused by the latest discovery of the changed gene in obese life. The news was made by Rockefeller University geneticist Jeffery Friedman. The researchers believe this gene influences development of a hormone that tells the organism how fat or full it is. Those was the changed gene may not sense when they have eaten enough or if they have sufficient fatty tissue. And thus， you can't tell when to stop eating.

　　The researchers also reported finding a gene nearly identical to the mouse obesity gene in humans. The operation of this gene in humans has not yet been demonstrated. however. Still， professionals like University of Vermont psychologist Esther Rothblum， reacted enthusiastically： ”This research indicate that people really are born with the tendency to have a certain weight just as they are to have a particular skin color or height”.

　　Actually， behavioral geneticists believe that less than half of total weight variation is programmed in the genes， while height is almost entirely genetic determined. Whatever role genes play， Americans are getting fatter. A survey by the Center for Disease Control found obesity has increased greatly over the last ten years. Such rapid change underlines the role of environmental factors like the abundance of rich foods in Americans' overeating. The Center for Disease Control has also found that teens are far less physically active than they were even a decade ago. Accepting that weight is predetermined can relieve guilt for overweight people. But people’s belief that they cannot control their weight can itself contribute to obesity.

　　Q12： What does the speaker say has aroused public interest?

　　Q13： What do we learn about the changed gene?

　　Q14： What does the University of Vermont psychologist Esther Rothblum say? Q15： What accounts for Americans' obesity according to a survey by the Center of Disease Control?

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