第20题: [单项选择]People form a close connection to celebrities not because _______. A. they have busy lives B. they live far away from their relatives and friends C. they cannot escape media coverage of celebrities D. they work with those celebrities 参考答案:D 答案解析:[详细解答] 作者仔细分析了这种局面形成的原因有：they have busy lives；they live apart from their relatives，they can read o
第26题: [多项选择]测量不确定度可用( )表示。 A. 标准差 B. 标准差的倍数 C. 说明了置信水平的区间的宽度 D. 最大允许误差 E. 说明了置信水平的区间的半宽度 参考答案:A,B,E 答案解析:为了表征赋予被测量之值的分散性，测量不确定度往往用标准差表示。在实际使用中，由于人们往往希望知道测量结果的置信区间，因此测量不确定度也可用标准差的倍数或说明了置信水平的区间的半宽度表示。为了区分这两种
第32题: [单项选择]Undoubtedly, ______wins the election is going to have a tough job getting the economy back on its feet. A. anyone B. who C. whoever D. everyone 参考答案:C 答案解析:本句话的意思是：毫无疑问，不管谁赢得了选举，都将面临着使经济复苏的艰巨任务。根据题意，答案为C。
