中国大学MOOC: The main types of water pollution are two kinds, which are pollution.
举一反三
- Generally, there are two kinds of light pollution: ecological pollution and astronomical light pollution. 不属于 common knowledge.
- 中国大学MOOC: Which of the following option is not the land pollution ?
- Which one doesn't belong to the chief types of environmental pollution?
- White pollution refer to plastic pollution.
- 酸雨是属于什么污染 A: water pollution B: air pollution C: soil pollution D: noise pollution