{{B}}pAssAgE 1{{/B}}

iF you ArE likE most pEoplE, your intElligEnCE vAriEs From sEAson to sEAson. you ArE proBABly A lot shArpEr in thE spring thAn you ArE At Any othEr timE oF thE yEAr. (76) {{u}}A、notED sCiEntist,Ellsworth huntington(1876- 1974), ConCluDED From othEr mEn’s work AnD his own Among pEoplE in DiFFErEnt ClimAtEs thAt ClimAtE AnD tEmpErAturE hAvE A DEFinitE EFFECt on our mEntAl ABilitiEs. {{/u}} (77) {{u}}hE FounD thAt Cool wEAthEr is muCh morE FAvorABlE For CrEAtivE thinking thAn is summEr hEAt.{{/u}} this DoEs not mEAn thAt All pEoplE ArE lEss intElligEnt in thE summEr thAn thEy ArE During thE rEst oF thE yEAr. (78){{u}}it DoEs mEAn, howEvEr, thAt thE mEntAl ABilitiEs oF lArgE numBErs oF pEoplE tEnD to BE lowEst in thE summEr. {{/u}} spring AppEArs to BE thE BEst pErioD oF thE yEAr For thinking. (79){{u}}onE rEAson mAy BE thAt in spring mAn’s mEntAl ABilitiEs ArE AFFECtED By thE sAmE FACtors thAt Bring ABout grEAt ChAngEs in All nAturE. {{/u}} FAll is thE nExt-BEst sEAson, thEn wintEr.As For summEr, it sEEms to BE gooD timE to tAkE A long vACAtion From thinking.

it sEEms thAt thE two BEst sEAsons ArE ______.A．spring AnD FAll
B．wintEr AnD summEr
C．summEr AnD spring
D．FAll AnD wintEr