题目

下表为测量一张纸的厚度时所设计的数据记录表格，请将a、b两处的内容补充完整，a      ；b      .最后一列取平均值的目的是：      。实验序号ab一张纸的厚度/mm平均值/mm123 答案：纸的张数  总厚度/mm  减小误差Linda drew than girl in her class.A.more careful; any otherB.more carefully; any otherC.more careful; the otherD.more carefully; the other