英语 高三 填空题 标准

生存与冒险话题词汇 — 英语填空题

外研社版·英语(高中) Unit 6 Survival AI 三重审校通过

题目
根据句意和首字母提示补全单词:After three days lost in the desert, the climbers finally used a mirror to s___1___ for help, and their r___2___ (获救) came the next morning when a helicopter spotted the flashes.