设,其中为任意常数,则下列向量组线性相关的为()
C
ShegotajobasanassistantstagemanagerattheCambridgeArtsFestivalTheatre,thinkingthatitmight________toacareerasaplaywright(剧作家).
________,Johnhasbeentoseveralforeigncountries.
设二阶可导函数,则()
Ipreferthisdiagram________thatone.
过渡时期总路线的“一体”包括_______。