环境问题与解决措施的讨论 — 英语词汇题
题目
根据首字母及中文提示补全单词，使句意完整。1. We should r________（v. 回收）waste paper and bottles to protect the environment. 2. Factories must not d________（v. 丢弃）rubbish into the river. 3. Air p________（n. 污染）is a serious problem in many big cities. 4. Everyone can make a c________（n. 贡献）to environmental protection.