C.remove D.imitate

　　解析:词义猜测题。根据上下文可知蛋白质不能模仿脂肪的行为作用。故选D项。

　　答案:D

　　3.These new proteins work nearly the same as the fats do because 　. 

　　A.they will cut fat content easily

　　B.they will break down easily

　　C.their products are cheaper and healthier

　　D.they ensure the original taste and texture

　　解析:细节理解题。根据第三段“...the researchers have produced the modified(调整了的) proteins that easily break down and therefore work nearly the same as the fats do during food production.”可知B项正确。

　　答案:B

　　4.Which of the following is the best title?

　　A.A Special Protein

　　B.How Proteins Work

　　C.Cut Down the Food Cost

　　D.A Special Research Team

　　解析:主旨大意题。本文主要介绍了一种新型蛋白质,可以用来代替脂肪。故选A项。

　　答案:A

　　B

　　(2015安徽“江淮十校”四月联考)

　　Do you think you are more intelligent than your parents and grandparents?According to James Flynn,a professor at a New Zealand university,you are!Over the course of the last century,people’s IQ test scores have gotten steadily higher—on average,three points higher each decade.This improvement is known as the “Flynn effect”,and scientists want to know what is behind it.

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