Generally, there are two kinds of light pollution: ecological pollution and astronomical light pollution. 不属于 common knowledge.
举一反三
- Decide which of the following is common knowledge and needs no<br/>referencing. A: <br/>There have been about 400 cancer deaths among 100,000 Japanese<br/>nuclear bomb survivors. B: The<br/>negative effects of GM crops have been shown on animals in many<br/>studies. C: The<br/>Big Bang theory posits that the universe began billions of years ago<br/>with an enormous explosion. D: Generally,<br/>there are two kinds of light pollution: ecological pollution and<br/>astronomical light pollution.
- 中国大学MOOC: The main types of water pollution are two kinds, which are 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
- Focus(副本) Match the kinds of pollution to the pictures.