生存与冒险话题词汇 — 英语词汇题
题目
根据句意和所给汉语提示，写出本单元核心词汇的正确形式：1. The climbers carried an emergency ________（信号）flare in case they got lost. 2. Drinking clean water is a basic ________（生存）need in the wild. 3. The pilot sent a distress ________（信号）before the plane landed. 4. They built a shelter to ________（幸存）the freezing night.