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语篇填空

Scientists have discovered that    1    (stay )in the cold could help us lose weight. Researchers at the University of California found that exposure to the cold increases levels of a protein that helps form brown fat——the type of fat that produces heat and keeps us warm. Brown fat burns energy,    2    helps us lose weight. White fat stores extra energy, which results    3    weight gain. The researchers said that because air conditioning and heating give us constant    4    (comfort)temperatures, our body’s need for brown fat has decreased. They found that: “Outdoor workers in northern Finland who    5    (expose) to cold temperature have    6    significant amount of brown fat when    7    (compare )to the same-aged indoor workers.” The research was conducted on two different control groups of mice.    8    group was injected with the protein that helps create brown fat. This group later gained 30% less weight after both groups were fed high-fat diets. The researchers say this could be good news in the fight against obesity. People who are obese have    9    (low)levels of brown fat than thinner people. Head researcher Hei Sook Sul said: “This protein could become an important target for research into the treatment and prevention of obesity and obesity-related diseases.” She added: “If you can somehow increase levels of this protein, you could    10    (possible)lose more weight even if eating the same amount of food.”

参考答案与解析

1.【答案】staying。解析：动名词做主语。故本题填staying。

2.【答案】which。解析：which引导非限定性定语从句。故本题填which。

3.【答案】in。解析：result in“导致”。句意：“导致体重增加”。故本题填in。

4.【答案】comfortable。解析：形容词作定语。故本题填comfortable。

5.【答案】exposed。解析：过去分词短语做后置定语。故本题填exposed。

6.【答案】a。解析：an amount of“许多”。故本题填a。

7.【答案】compared。解析：when+过去分词做状语，其中省略了主语和be动词。故本题填compared。

8.【答案】One。解析：根据句意可知多组小白鼠，其中一组被注射了能产生brown fat的蛋白质。故本题填One。

9.【答案】lower。解析：句意：“胖人比瘦人的brown fat含量更低”。故本题填lower。

10.【答案】possibly。解析：副词作状语。故本题填possibly。