【判断题】企业扩大生产规模、对资源的充分有效利用、组织和经营效率的提高而形成的规模经济是“外部规模经济”。错误
【单选题】One reason why_____plane is such a popular means of_____transport is that it is very fast and safe.
【单选题】Do you think which means of transport is _____ , the underground or the plane? [ ]
【单选题】在教学实施过程中,要明确以()为本的教学设计的指导思想
【判断题】“鹿角”和“凤眼”是描绘树枝的上仰和下俯的形式。