中考英语试题分类汇编：阅读理解精讲四、科普常识名师（完整版）资料(可以直接使用，可编辑优秀版资料，欢迎下载）（2021江苏扬州）DPicturethescene:It'smidnight.You'reveryhungryafterstudyingforalongtime.Thenyouseeanicepieinthefridge.Doyoueatit?Itseemsthatyoushouldn't,formanyreasons,includingitsinfluenceonyourstudies.Scientistshavelongknownthateatinglateatnightcanmakeusgainweight.Butnowanewstudyhasshownthatlate­nighteatingcanalsohaveabadinfluenceonourbrains—itmighthurtourabilitytolearnnewthingsandstorememories.“Webelievethatlate­nighteatingmayaffect(影响)ourlearningbyaffectingthepartsofthebrainthatcontrollearningandmemory，”DawnLoh,PhD,aprojectscientistattheUniversityofCalifornia,LosAngeles,said,“Webelievethetimingofwhenweeatisthemaincauseofthedamaged(受损的)memory.”Forthestudy,theresearcherslookedatmicewithstrictfeedingplans.Fortwoweeks,themicewereeitherallowedtoeatduringthetimewhentheyareusuallythemostactive,orduringthetimewhentheyusuallysleep.Themicereceivedthesameamount(数量)ofsleepandcalories.Thentheresearcherstestedthebrainsofthemice.Inonetest,theresearcherstriedtofindoutwhetherthemicecouldrememberthataroomwasconnectedtoanelectricshock(电击)after24hourshadgoneby.Theresearchersnoticedthat,whenthemicewereputintheroomagain,thosemicethatatewhentheyshouldhavebeensleepingwerelesslikely(可能的)togetscaredthanthosemicethatateduringusualhours.Itmeansthattheydidn'tremember.Sothinktwicebeforethemidnightsnack—itmightbebadformorethanyourweight.42.Whatdoestheunderlinedword“it”inParagraph2referto(指代)?A.Studyingforlong.B.Anicepie.C.Anewstudy.D.Late­nighteating.43.Forthestudy,theresearchersneed________．A．tocheckthebrainsofthemicebeforetheteststartedB.tofeedthemiceonlyduringthetimewhentheyusuallysleepC.tokeepthemiceinaroomwithanelectricshockallthetimeD.toletthemicereceivethesameamountofsleepandcalories44.Accordingtothepassage,whichofthefollowingsentencesisTRUE?A.Arecentstudyshowslateeatingaffectsweight.B.Whatweeatcanaffectlearningandmemory.C.Themicethatareduringsleepinghoursdidn'tremember.D.Themicethatateduringusualhoursdidn'tremem