题型：语法填空（语篇） 题类：模拟题 难易度：困难
山东省泰安肥城市2021届英语高考适应性训练试卷（一）
Drinking coffee could activate the body's fat-fighting defenses, which is a (discover) that could have a potential effect in the battle against obesity and diabetes. In a study, researchers said that coffee may help stimulate our brown fat reserves, plays a key role in how quickly we can burn calories.
There are two forms of fat cells, brown cells and white cells, and each (play) a different role in our body. While brown cells help generate heat, white cells take responsibility the storage of fat or energy.
"Brown fat works (different) from other fat in your body and produces heat by (burn) sugar and fat, often in response to cold," said Professor Michael Symonds. "Increasing (it) activity improves blood sugar control, and the extra calories burnt help with weight loss. However, until now, no one has found an (accept) way to stimulate its activity in humans.
"We are now trying to find out there's another component helping with the activation of brown fat, besides caffeine." Symonds said, "Once we have confirmed which component is responsible for this, it could potentially be used as part of a weight-management method or regulation program (help) prevent diabetes."
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