单项选择题 下列评价估计量好坏的标准中,不属于常用标准的是A. 无偏性B. 有效性C. 一致性D. 非负性
未知题型 What shouldn't Kobe Bryant do to be the league's ail-time scorer from now on?A.No injury,B.Keeps average 25 points until he is 38.C.Started in the NBA when he was 18.D.Gets more scores than Kareem Abdul-Jabbar.
未知题型 Which word is most similar in meaning to 'trippy' in the last paragraph?D.PerplexeD.