第3题: [单项选择]The ______ of such I. Q. tests full of questions on American culture was not questioned at that time. A. significance B. validity C. efficiency D. justification 参考答案:B 答案解析:significance重要性;validity有效性,正确性;efficiency效率,功率;justification认为有理,认为正当。题目说的是只对美国文化进行提问的智商测试的有效性在当时并没