题目内容
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（暴露） to the cold increases levels of a protein（蛋白） that helps form brown fat----the type of fat that produces heat and keeps us warm．Brown fat burns energy，（62）which helps 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（减少）．They found that："Outdoor workers in northern Finland who （65）are exposed（expose） to cold temperature have（66）a big amount of brown fat when（67）compared（compare） to same-aged indoor workers．"The research was conducted on two different control groups of mice．（68）One group was injected（注入、注射） 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（肥胖）．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．
分析 科学家们发现呆在寒冷的天气里可以帮助我们减肥，加利福尼亚大学的研究人员发现，暴露于寒冷的空气可以增加一种蛋白质，有助于形成棕色脂肪-一种产生热量的脂肪并使我们保持温暖．寒冷不仅能帮助人们强身健体，甚至对糖尿病的治疗也似乎大有裨益．
解答 61．staying考查动名词．分析句子成分可知，could help是谓语，stay是非谓语在句中做主语，动名词做主语表笼统的概念，故填staying．
62．which 考查非限制性定语从句．分析句子成分可知，先行词Brown fat在从句中作主语，因有逗号隔开，所以是非限制性定语从句，在非限制性定语从句中指物做主语的关系代词用which，故填which．
63．in 考查介词．result in是固定短语，意为"引起，导致"，后跟造成的结果，故填in．
64．comfortable 考查形容词．因为形容词修饰名词，根据空后的名词 temperatures 可知此处应用形容词形式，故填comfortable．
65．areexposed 考查时态． 句意：暴露在寒冷温度下的芬兰北部的户外工人． 固定短语beexposed to意为"暴露于…"，根据后面的 have 是一般现在时，可知此处也是一般现在时，故填are exposed．
66．a 考查不定冠词． asignificant amount of是固定搭配，意为"大量的；数量可观的"，故填a．
67．compared 考查状语从句的省略．compare与其逻辑主语brown fat 是被动关系，因为是when引导的状语从句，且主从句主语一致，所以省略了从句的主语和系动词，故填compared．
68．One 考查数词．根据前面的 twodifferent control groups of mice 可知，此处指一个队，故填One．
69．lower 考查形容词的比较级． 根据后面的than可知此处应用形容词的比较级，故填lower．
70．possibly考查副词．因为修饰动词的是副词，所以修饰动词lose的是副词possibly，故填possibly．
点评 语法填空题是考查学生的语言运用能力．解题时，要在理解文章的基础上，灵活运用语法知识，如词性，时态，名词单复数，连接词，代词，冠词等判断空白处应填写的内容．答完后，还要通读全文，核对所填单词形式是否正确，是否符合语境．
