单选题 In arithmetic, a number {{U}}stands for{{/U}} the size of a set of things.
  • A. measures
  • B. estimates
  • C. cancels
  • D. represents
【正确答案】 D
【答案解析】[解析] represents“象征,代表”,与划线词意义相当。A项measure“测量,衡量”;estimate “评估,估计”,cancel“取消,去除”。