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如何理解腔肠动物在动物进化上的重要位置？

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Duringthelastfewdecadestherehasbeenasignificantchangeineating__intheUK.Sincetheearly1980seatingoutinrestaurantsandcafeshasincreasedsteadily.Thereareseveralreasonsforthistrend.50yearsagomostwomenwereandcookedfortheirfamilieseveryday.Butrecently,withmorewomenworkingoutsidetheirhome,lesstimehasbeen_forfoodpreparation.Currently,71%ofwomenaged20-45areatwork,andby2015itisestimatedthatthiswillriseto84%.Anotherfactoristhegrowthin_whichhasrisensignificantlysincethelate1970s.Withmoremoneyintheirpocketspeoplearemorelikelyto_____thetroublesofshoppingandcookingbyvisitingtheirlocalrestaurants.