四川成都市2016高考英语阅读理解二轮提升选练80集之(60)阅读下列四篇短文,从每小题后所给的A,B,C或D四个选项中,选出最佳选项
Howisitthatsiblings(兄弟姐妹)canturnoutsodifferently
Oneansweristhatinfacteachsiblinggrowsupinadifferentfamily
Thefirstbornis,forawhile,anonlychild,andthereforehasacompletelydifferentexperienceoftheparentsthanthosebornlater
Thenextchildis,forawhile,theyoungest,untilthesituationischangedbyanewarrival
Themotherandfatherthemselvesarechangingandgrowinguptoo
Onesiblingmightliveinastableandclosefamilyinthefirstfewyears;anothermightberaisedinafamilycrisis,withadisappointedmotheroranangryfather
Siblingcompetitionwasidentifiedasanimportantshapingforceasearlyasin1918
Butmorerecently,researchershavefoundmanywaysinwhichbrothersandsistersarealastingforceineachothers’lives
AnnetteHendersonsaysfirstbornchildrenpickupvocabularymorequicklyt