A.Happinessliesbetweenthepositiveandthenegative
B.achmanisthemasterofhisownfate
C.Successleadstohappiness
D.Happyishewhoiscontent
A.feelithardertoexperiencehappiness
B.associatetheirhappinesslesswithothers
C.willtakefewerrisksinpursuinghappiness
D.tendtobelieveresponsibilitymeanshappiness
A.Psychologiststhinksatisfyingworkiskeytohappiness
B.Psychologists'opinioniswellprovedbyGrandma'scase
C.Grandmaoftenfoundtimeforsocialgatherings
D.Grandma'shappinesscamefrommodestexpectationsoflife
A.considerpressuresomethingblockingtheirway
B.stresstherighttohappinesstoomuch
C.areatalosstomakecorrectchoices
D.aremorelikelytobehappy
A.Lessenthechanceofgettingcancer
B.createanidealobservationcondition
C.ensurecitizensagoodsleepatnight
D.enableallcreaturestoliveinharmony
A.Savingwildlifeissavingourselves
B.Greateffortsshouldbemadetosaveenergy
C.Humanactivitiesshouldbeenvironmentallyfriendly
D.Newequipmentshouldbeintroducedforspacestudy