单项选择题
A.construction methods are saferB.buildings are made from a set of standardized unitsC.similar buildings can be producedD.all units are produced on the site
A.women are naturally more helpfulB.men and women talk different languagesC.men talk most and interrupt other speakers moreD.little girls’conversation is less definite
A.talkB.talkingC.to talkD.talked