完形填空 Theupsanddownsoflifemayseemunpredictable.Butscientistsknowthereareclear__1__that

almostallpeopleshare.Evenifyou'vepassedyour"best"youstillhaveother__2__yearstocome.

Certainimportanthighpointscomelaterinlife.

Whenareyou__3__?From18to25accordingtoI.Q.scores;butyou'rewiserandmore__4__

withincreasingage.Ataround30mentalabilitiesbegintodecline__5__yourabilitytodomaths.But

yourabilitytocompleteothertasks__6__.Forexampleyourvocabularyincreasesovertime.At60

yourbrain__7__almostfourtimesasmuchinformationasitdidatage21.Becauseofthissome

psychologistssuggestthat"maturityquotients"(M.Q.)beusedtomeasureintelligencefor__8__.

Whenareyouhappiest?Youhavethebest__9__senseofyourselffrom15to24whenyoufeel

energeticallthetime.Thebestprofessionalsenseisfrom40to49.Beforeage24webelievethatour

happiestyearsareyetto__10__butwhenweareover30webelievethatthey'rebehindus.Afterage

30we'remore__11__anddon'tviewhappinessasagoalinitself.Ifwemaintainourhealthachieve

professionalandemotionalgoalsthen__12__wefeel willfollow.

Whenareyoumostcreative?Generallybetween30and39butit__13__withdifferentprofessions.

Thehighpointsinareassuchasscienceandeconomicscome__14__-mostNobelprizewinnersdidtheir

topresearchintheir20'sand30's-butforpeoplewhokeepanactivemindthereisnoupperage__15__.( )1.A.plans

( )2.A.good

( )3.A.best

( )4.A.powerful

( )5.A.generally

( )6.A.climbs

( )7.A.recognizes

( )8.A.babies

(