Theword“minister”originallymeant“aservant”,butnowhaschangedto“aheadofaministry”.Thisprocessofmeaningchangeiscalled______.
翻译：IbelieveChineseeconomicauthoritiesrecognizetheproblemandthenextFive-YearPlanwilladdressiteffectively.
Wordsthatareidenticalonlyinspellingbutdifferentinsoundandmeaningarecalled______.
ThelargestandsmalleststatesoftheUnitedStatesare________.
ThethemeofThanksgivinghasalwaysbeen________.