Question

3．Scientists have discovered that（61）staying（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，（62）whichhelps us lose weight．White fat stores extra energy，which results（63）in weight gain．The researchers said that because air conditioning and heating give us constant，（64）comfortable（comfort） temperatures，our body's need for brown fat has decreased．They found that："Outdoor workers in northern Finland who（65）are exposed（expose） to cold temperature have （66）asignificant amount of brown fat when67）compared（compare） to same-aged indoor workers．"The research was conducted on two different control groups of mice．（68）Onegroup 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（69）lower（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（70）possibly（possible） lose more weight even if eating the same amount of food．"

Answer 1

分析 科学家研究发现处在寒冷的环境里能帮助人们减肥，人体内有两种脂肪，褐色脂肪燃烧能力帮助减肥，白色脂肪储存能量使人增肥，经常暴露在寒冷环境里的人体内褐色脂肪较多，故寒冷的环境能帮助人们减肥．

解答 1．staying；考查非谓语动词．此处在that从句中作主语，故用动名词staying．
2．which；考查定语从句．先行词是"Brown fat burns energy"整个句子，且在定语从句中作主语，故用which引导，译为"这一点"．
3．in； 考查固定短语．根据句意，result in是固定短语意为"导致，结果是…"．
4．comfortable；考查形容词，此处在句中作定语，修饰"temperatures"，故用形容词comfortable．
5．are exposed；考查动词的语态．此处指"被暴露在…"，故用被动语态are exposed．be exposed to意为"暴露在…"．
6．a； 考查冠词．a significant amount of 是固定短语，意为"大量的"．
7．compared； 考查非谓语动词．句子的主语"outdoor workers"与compare之间是被动关系，故用过去分词compared在句中作状语．
8．One；考查数词．此处指其中一个组，故用one．
9．lower； 考查形容词比较级．根据句中"than"可知此处用比较级，故用lower．
10．possibly；考查副词，此处用副词possibly在句中作状语，修饰动词lose．

点评 首先要通读全文，了解大意，抓住上下文语境所提供的信息，仔细分析带空格的句子，明确空格所要填的词义，词型和短语搭配，给出所要填的正确形式，然后整体阅读短文，核对答案．