下列操作中，不可能触发对应关系表上触发器的操作是 ______。
A、SELECTA
暂无解析
英语翻译：undermanned
Theword“minister”originallymeant“aservant”,butnowhaschangedto“aheadofaministry”.Thisprocessofmeaningchangeiscalled______.
Theprofessorworkedfor7hoursata________.
Egypt’sverysoilwasbornintheNile’sannualflood;withthefloodcamethelife-givingmudthatmadeEgyptthegranaryoftheancientworld.（）
英语翻译：thescienceofbioticcontrol
