王老师:19139051760(拨打)复制微信 题目 更新时间:2023/4/3 One of the reasons why men invented certain sounds to express thought and actions was that __________.(2分)Athey could agree upon certain signsBthey could write them downCthey could combine themDthey could communicate with each other 答案 登录 注册 正确答案C 出自:学起plus弘成 >> 山东第一医科大学2022年下半年英语2(本)在线考试 山东第一医科大学继续教育学院