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2019-2020年高考英语一轮总复习第一部分教材知识梳理Unit3Ahealthylife练习新人教版选修
一、阅读理解共8小题;每小题2分满分16分AThereareanextremelylargenumberofantsworldwide.Eachindividual个体的anthardlyweighsanythingbutputtogethertheyweighroughlythesameasallofmankind.Theyalsolivenearlyeverywhereexceptonfrozenmountaintopsandaroundthepoles.Foranimalstheirsizeantshavebeenastonishinglysuccessfullargelyduetotheirwonderfulsocialbehavior.Incolonies群体thatrangeinsizefromafewhundredtotensofmillionstheyorganizetheirliveswithacleardivisionoflabor.Evenmoreamazingishowtheyachievethisleveloforganization.Whereweusesoundandsighttomunicateantsdependprimarilyonpheromones外激素chemicalssentoutbyindividualsandsmelledortastedbyfellowmembersoftheircolony.Whenanantfindsfooditproducesapheromonethatwillleadothersstraighttowherethefoodis.Whenanindividualantesunderattackorisdyingitsendsoutanalarmpheromonetowa...。