《阅读理解特训:3真2模含解析》2014届高三英语二轮突破17C8[2013·浙江卷]CThebabymonkeyismuchmoredevelopedatbirththanthehumanbaby
Almostfromthemomentitisborn,thebabymonkeycanmovearoundandholdtightlytoitsmother
Duringthefirstfewdaysofitslifethebabywillapproachandholdontoalmostanylarge,warm,andsoftobjectinitsenvironment,particularlyifthatobjectalsogivesitmilk
Afteraweekorso,however,thebabymonkeybeginstoavoidnewcomersandfocusesitsattentionson“mother”—therealmotherorthemother-substitute(母亲替代物)
Duringthefirsttwoweeksofitslifewarmthisperhapsthemostimportantpsychological(心理的)thingthatamonkeymotherhastogivetoitsbaby
TheHarlows,acouplewhoarebothpsychologists,discoveredthisfactbyofferingbabymonkeysachoiceoftwotypesofmother-substitutes—onecoveredwithclothandonemadeofbarewire
Ifthetwoartificialmotherswereboththesametemperature,the