A:{x|x<-1或x>1}
B:{x|x<-1或x≥1}
C:{x|x<-1且x≥1}
D:{x|x≥1}
As the saying goes,“God helps those who help ____ (他们自己).”
袁采说:“有所许诺,纤毫必偿;有所期约,时刻不易。”这句话告诉我们( )