C
NorthAmericanblackbearsareshyanimals.Theyarefearfulbynatureandwillusuallyrunawayiftheyseeorhearpeople.Becauseofthisitcanbedifficultforscientiststolearnabouttheseanimals.
InordertostudyblackbearsresearchersfromNewJerseyUSAcatchbearsandusedrugstohelpthemgotosleep.Researchersthenwork
outthesizeandtheweightofthebeartakebloodtotestfordiseasesremoveatoothandtakeittothelabtofindoutitsage.FromthesestudiesresearcherswanttofindouthowmanybearsliveinNewJerseyhowlongtheyliveandhowmanybabiestheyproduce.
ButinMinnesotaUSA.researchersstudybearsthatarecompletelyawake.Thebearsknowtheresearchers，voicesandtheyarenotafraidoftheresearchteam.Withthehelpofafewgrapestokeepthebearsbusyresearcherscantouchthemtochecktheirheartslookattheirteethanddootherjobs.Researcherscanalsowalkorsitwithbearsforhoursandmakevideostolearnabouttheireverydaylives.
Inbothplacesthemainpurposeisthesame—tomakesurethereisahealthypopulationofblackbears.Buttheresearchmethodsandthekindsofinformationthatresearchersareabletocollectarequitedifferent.
()41.InthefirstparagraphwecanlearnthatNorthAmericanblackbearsare .
A.shyandfearfulanimals B.notfoundtoday
C.wellknowntoscientists D.notafraidofpeople
()42.Theunderlinedword“remove”inthesecondparagraphprobablymeans inChinese.
A.拔下 B.移植 C.清洗 D.修补
()43.WhichofthefollowingmayNOTbeincludedintheNewJerseystudiesonbears?
A.Theage.B.Thewayoftheircommunication.
C.Theweight.D.Thenumberofbabiestheyproduce.
()44.IntheMinnesotastudiesresearchers .
A.cannevergetclosetothebears
B.studythebearswhiletheyareasleep
C.usegrapestomakethebearsfull
D.learnalotaboutthebears5everydaylives
()45.Whatdothetwostudieshaveincommon?
A.Researchplaces. B.Themainpurpose.
C.Researchmethods.D.Collectedinformation.