Natural rubber usually is much stronger and harder than vulcanized rubber.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- 中国大学MOOC: Natural rubber usually is much stronger and harder than vulcanized rubber.
- Can natural rubber be used in irrigation and drainage hoses？ A: 正确 B: 错误
- Can natural rubber be used in irrigation and drainage hoses？
- ……wearing rubber boots…同义结构 A: in rubber boots B: have rubber boots on
- Wood does not conduct electricity, ______． A: nor rubber does B: nor does rubber C: also doesn’t rubber D: so doesn’t rubber