题目

设a是最小的正整数，b是最大的负整数，c是绝对值最小的数，则 的值（） A . 1 B . －1 C . 0 D . －2 答案：A 12. --- What's on tonight? --- I hear there is going to be a pop song contest. A group of famous singers from Hong Kong and Macao are ____ in our village theatre. A．making his first appearance B．appearing on the stage C．making their first appearances D．appearing themselves