环境问题与解决措施的讨论 — 英语词汇题
题目
根据句意及首字母提示补全单词。1. Factories must stop d________（倾倒）chemical waste into rivers. 2. Growing more trees can help reduce greenhouse gas e________（排放物）. 3. Solar energy is a clean and r________（可再生的）source of power. 4. Everyone should take r________（责任）for protecting the environment.