Asisshowninarecentstudy，thewaypeoplesleepatnightactuallydeterminesalotaboutthetypepersonalitytheyhave．RobertPhipps，abodylanguageexpert，hasidentifiedfoursleepingpositionsthataffectpersonality．Phippsfoundthat

　　Asisshowninarecentstudy，thewaypeoplesleepatnightactuallydeterminesalotaboutthetypepersonalitytheyhave．RobertPhipps，abodylanguageexpert，hasidentifiedfoursleepingpositionsthataffectpersonality．

　　Phippsfoundthatworriers，thosewhostressthemost，tendtosleepinthefetal（胎儿的）position．Hefoundthatthisisbyfarthemostcommonbedtimeposition，sleepingontheirsidewithkneesupandheaddown．Themorewecurlup（蜷曲），themorecomfortweareseeking，accordingtoPhipps．

　　Thesecondmostcommonpositionisthelog，indicatingstubbornness．Peoplesleepwithastraightbody，witharmsateachside，asiftheyarestandingguardatBuckinghamPalace，andthesepeople（the28percentwhosleepthisway）oftenwakeupstiffer（更僵硬）thanwhentheywenttosleep．"Thelongeryousleeplikethis，themorerigidyourthinkingisandyoucanbecomeinflexible，whichmeansyoumakethingsharderforyourself，"accordingtoPhipps．

　　Yearner（向往型的）sleepersarenextonthelist．About25percentofpeoplesleepinthisstyle----ontheirbackswitharmsstretchedoutinfront，lookingasiftheyareeitherchasingadreamorperhapsbeingchasedthemselves．Yearnersaretypicallytheirownworstcritics，alwaysexpectinggreatresults，explainedPhipps．Thesepeopleoftenwakeuprefreshedandeagertofacethechallengesofthedayahead．

　　Perhapsthemostspecialsleepstyleisthefreefallerposition．Thissleepstylemakesup17percentofthepopulation．Theysleepfacedownwitharmsstretchedout．Thesepeople，accordingtoPhipps，feelliketheyhavelittlecontrolovertheirlife．Notonlyisthisthestrangestofsleepstyles，italsotheleastcomfortable，andpeoplemaywakeupfeelingtiredandhavenoenergy．

　　Inconclusion，Phippshasonlyonemorethingtoadd："Agoodnight'ssleepsetsyouupforthefollowingdayandoursleepingpositionscandeterminehowwefeelwhenwewake．"

　　55．Whichofthefollowingpicturesisthefetalposition？___

　　56．Theunderlinedword"rigid"thethirdparagraphisclosestinmeaningto"___"．

　　A．comfortable B．flexible C．stubborn D．strange

　　57．Whichsleepingpositionindicatesthatthesleepertendstosee