相关Inthe1960s的文学知识

问题详情：Inthe1960s，whilestudyingthevolcanichistoryofYellowstoneNationalPark，BobChristiansenbecamepuzzledaboutsomethingthat，oddly，hadnottroubledanyonebefore：hecouldn'tfindthepark'svolcano.Ithadbeenknownfo...

问题详情：Inthe1960s,medicalresearchersThomasHolmesandRichardRahedevelopedachecklistofstressfulevents．Theyfoundoutthatanymajorchangecanbestressful．Negativeeventslike“seriousillnessofafamilymember”werehi...