预防意外事故的重点是
D
暂无解析
翻译：DrivingsouthwardfromCairointothevalley,Ienteredalandscapethatowedlittletothepresentera.
Theword“minister”originallymeant“aservant”,butnowhaschangedto“aheadofaministry”.Thisprocessofmeaningchangeiscalled______.
英语翻译：telecommunications
Itisvitalthatthework_______intime.
Ingrammaticalcontext,themeaningofawordmaybeinfluencedbythe______inwhichitoccurs.