安全与危险相关词汇 — 英语词汇题
题目
根据句意及首字母或中文提示补全单词：1. Be careful! The wet floor is d________ (危险的). 2. Please keep s________ (安全的) when you cross the busy road. 3. Don't touch the broken wire; it may cause an a________ (事故). 4. Smoke can be h________ (有害的) to your health. 5. In an e________ (紧急情况), call 120 at once.