Scientistshavediscoveredthat
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Scientists have discovered that ____41____ (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, ____42____ helps us lose weight. White fat stores extra energy, which results ____43____ weight gain. The researchers said that because air conditioning and heating give us constant, ____44____ (comfort) temperatures, our body's need for brown fat has decreased. They found that: "Outdoor ____45____(worker) in northern Finland who are exposed to cold temperature have ____46____(gain) significant amount of brown fat when ____47____ (compare) to same-aged indoor workers." The research was conducted on two different groups of mice. ____48____ 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 ____49____(low) levels of brown fat than thinner people. Head researcher Hei Sook Sul said: " If you can increase levels of this protein, you could ____50____ (possible) lose more weight even if eating the same amount of food."
【回答】
41. staying 42. which 43. in 44. comfortable 45. workers
46. gained 47. compared 48. One 49. lower 50. possibly
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