2021年全国硕士研究生招生考试英语(一)真题及答案.pdf

2021年全国硕士研究生招生考试英语（一）试题 Section I UseofEnglish Directions: Readthefollowingtext.Choosethebestword(s)foreach numberedblan andmar [A],[B], [C] or [D]ontheANSWERSHEET.(10points) Fluid intelligence is the type of intelligence that has to do with short-term memory and the abilitytothin quickly,logically, andabstractlyinorderto solvenewproblems. It 1 in youngadulthood,levelsoutforaperiodoftime,andthen 2 startstoslowlydeclineaswe age.But 3 agingisinevitable,scientistsarefindingthatcertainchangesinbrainfunction maynotbe. One study found that muscle loss and the 4 of body fat around the abdomen are associated with a decline in fluid intelligence. This suggeststhe 5 that lifestyle factors mighthelppreventor 6 thistypeofdecline. Theresearchers looked atdatathat 7 measurements ofleanmuscle andabdominal fat from more than 4,000 middle-to-older-aged men and women and 8 that data to reported changesinfluidintelligence overasix-yearperiod.Theyfoundthatmiddle-agedpeople 9 highermeasuresofabdominalfat 10 worseonmeasuresoffluidintelligenceasthe years 11 . For women, the association maybe 12 to changes in immunity that resulted from excessabdominalfat;inmen,theimmunesystemdidnotappeartobe 13 .Itishopedthat futurestudiescould 14 thesedifferencesandperhapsleadtodifferent 15 formen andwomen. 16 ,therearestepsyoucan 17 tohelpreduceabdominalfatandmaintainlean muscle mass asyou agein order to protect both your physical andmental 18 .The two highly recommended lifestyle approaches are maintaining or increasing your 19 of aerobic exercise and following a Mediterranean-style 20 that is high in fiber and eliminateshighlypro