()是评价职业技能鉴定试卷质量的两个主要指标。
A. 难度和区分度
B. 难度和效度
C. 信度和区分度
D. 信度和效度
欣赏体育比赛或表演,是由体育表现的美,以复杂多变的直观形象作用于观赏者的视听器官,进而引起各种奇特感觉。
A. 正确
B. 错误
If absolutely necessary,the best way to land on a beach in a motor lifeboat is to().
A. run as fast as the boat will go and keep the sea on the stern
B. secure the engine,put sea anchor over the bow,put out the oars,use sweep oar and back onto beach
C. go in under oars and put out the sea painter
D. put the sea broadside and let the boat drift ashore
在联合国人口司划分的九类地区中,城市化速度最快的是()
A. 西欧
B. 美国
C. 前苏联
D. 发展中国家