Disposed oil and many other items can be reused to（）
A: make new materials
B: preserve wetland and animals
C: have clean air
D: have clean water
E: collect cigarette butte
F: collect despoiled oil
A: make new materials
B: preserve wetland and animals
C: have clean air
D: have clean water
E: collect cigarette butte
F: collect despoiled oil
举一反三
- Ryan，with the help of others，is fulfilling his dream of help African people to（） A: make new materials B: preserve wetland and animals C: have clean air D: have clean water E: collect cigarette butte F: collect despoiled oil
- _____ is arranged for cleaning the lubricating oil in the system and clean oil can be provided from a storage tank.
- What was the good news for scientists A: The underground oil resources have not been affected. B: Most of the desert animals and plants have managed to survive. C: The oil lakes soon dried up and stopped evaporating. D: The underground water resources have not been polluted.
- make clean with water
- Water will become the oil in the 21st century because ______. A: Asians are enjoying a better life. B: there is an ever-increasing population C: farming calls for more clean water D: there will be more droughts