根据下面资料，回答41-45题&nBsp;
john hEwitt stuDiEs thE Biology oF intElligEnCE. hE's Also A pArEnt. ovEr thE yEArs.hEwitt hAs DrAwn on his sCiEntiFiC knowlEDgE in mAking pArEnting DECisions.&nBsp;
"i' m A FAthEr oF Four ChilDrEn mysElF. i nEvEr worriED too muCh ABout thE EnvironmEnts thAt i wAs proviDing For my ChilDrEn BECAusE i thought, it woulD All work out in thE EnD AnywAy ArEn't thE gEnEs EspECiAlly powErFul?" hEwitt sAiD. hE knEw intElligEnCE hAs A strong BiologiCAl pArt. iF your pArEnts ArE smArt.you' 11 proBABly BE smArt.&nBsp;
But rECEntly, hEwitt DisCovErED somEthing thAt surprisED him. "wEll, i mAy hAvE BEEn wrong." hE ADmits. it is thE EnvironmEntAl inCrEAsE you CAn gEt, or thE hArm you CAn suFFEr through hArD timEs thAt mAy BE A littlE morE importAnt in ADolEsCEnCE(青春期) thAn i hAD thought.&nBsp;
hEwitt AnD othEr rEsEArChErs rECEntly notiCED thAt kiDs who hAD highEr iqs to BEgin with sEEmED to hAvE An ExtEnDED pErioD in ADolEsCEnCE During whiCh thEy kEpt thE ABility to lEArn At A rApiD pACE, just likE muCh youngEr ChilDrEn.&nBsp;
"it wAs As iF thErE wAs An ExtEnDED sEnsitivE pErioD in thE highEr iq inDiviDuAls. or AnothEr wAy oF looking At it is thAt thE sEnsitivity to thE EnvironmEnt whiCh is ChArACtEristiC oF EArliEr ChilDhooD sEEms to EnD EArhEr For inDiviDuAls with A lowEr iq." hEwitt sAiD. smArt kiDs mAy tEnD to tAkE pArt in ChAllEnging ACtivitiEs AnD this kEEps thEm rEADy to ConsiDEr lEArning. or it CoulD BE thAt gEnEs thAt lEAD to A high iq Also CAusE An ExtEnDED lEArning pErioD.&nBsp;
An ExtEnDED lEArning pErioD DoEs not nECEssArily mEAn A FurthEr inCrEAsE in thE iq. But A vEry smArt tEEnAgEr with An ExtEnDED '" sEnsitivE pErioD" oF lEArning might BE ABlE to piCk up A nEw lAnguAgE or A musiCAl instrumEnt. suCh lEArning CAn hAvE long-tErm BEnEFits.&nBsp;
"EvEn iF in thE EnD thE iq EnDs up BEing DEtErminED to A lArgE ExtEnt By thE gEnEs, iF thErE's BEEn A pErioD whErE thE EnvironmEnt mAkEs A DiFFErEnCE,thAt CoulD hAvE liFElong ConsEquEnCEs." hEwitt sAiD.&nBsp;
41[单选题] &nBsp;hEwitt originAlly thought thE most importAnt thing AFFECting kiD's intElligEnCE wAs_________. 查看材料
A.thE gEnE
B.thE EnvironmEnt
C.thE pArEnting DECision
D.thE sCiEntiFiC knowlEDgE
42[单选题] whAt hAs hEwitt DisCovErED rECEntly ABout kiD's intElligEnCE? 查看材料
A.thE EnvironmEnt mAyBE morE importAnt For kiDs intElligEnCE
B.ADolEsCEnCE is An importAnt For kiDs intElligEnCE
C.Biology plAys A Big pArt in onE's intElligEnCE
D.hArD timEs ArE BAD For kiDs' intElligEnCE.
43[单选题] hEwitt FinDs thAt kiDs with A highEr iq_________. 查看材料
A.EnD thEir sEnsitivE pErioDs EArliEr
B.hAvE A longEr pErioD oF ADolEsCEnCE
C.BEhAvE just likE muCh youngEr ChilDrEn
D.ArE sEnsitivE to thE EnvironmEnt in ADolEsCEnCE
44[单选题] thE unDErlinED pArt "this" in pArAgrAph 5 rEFErs to_________. 查看材料
A.smArt kiDs
B.CAusE An ExtEnDED lEArning pErioD
C.inDiviDuAls with A lowEr iq
D.tAkE pArt in ChAllEnging ACtivitiEs
45[单选题] wE CAn inFEr From thE pAssAgE thAt An ExtEnDED lEArning pErioD? 查看材料
A.DEtErminEs thE iq in thE EnD
B.mAy BEnEFit tEEns All thEir livEs
C.hAs nothing to Do with thE gEnEs
D.is oFtEn FounD in thE lowEr iq inDiviDuAls