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题型四 语法填空 专项强化·训练 .语法填空 A 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 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.” | 
