字段Size = {small, medium, large}属于那种属性类型（)A标称属性B二元属性C序数属性D数值属性

___with the size of aireraft carrier, the largest whale does not seem large at all.A.When

In the past, American families tended to beA．quite large.B．quite small.C．small.D．medium-si

A. small－sized B. moderately－sized C. large－sized D. huge－sized

What makes it difficult to build green schools in Clark County？A. The large size.B. Li

59._________A.tight B.loose C.large D.small

In the past American families tended to beA.quite large.B.quite small.C.small.D.medium-si