题目

3的相反数是（ ）A．﹣3 B．3 C．D．﹣ 答案：【答案】A．【解析】试题分析：根据相反数的概念知：3的相反数是﹣3．故选A．I couldn’t come up with a good excuse for being late．A.think ofB.put upC.getD.say