Many factories pour untreated water into rivers directly, and release poisonous gas the air, which causes acid rain.

当前位置：高中英语 /

1. Many factories pour untreated water into rivers directly, and release poisonous gas the air, which causes acid rain.

微信扫码预览、分享更方便

使用过本题的试卷

高中英语人教版（2019）选修三Unit 3 Environmental Protection Reading and Thinking课时练习