中国大学MOOC: Concrete, the _____gray material, is arguably the most widely-used construction material worldwide.
举一反三
- Complete the following sentences with appropriate words in the box. Change their forms if necessary.retainbiodiversesustainablerenewableaffordablecalamityubiquitousinsulation Concrete, the ____________ gray material, is arguably the most widely used construction material worldwide.
- is the most commonly used man-made construction material in theworld. A: hardwood B: softwood C: Concrete
- 中国大学MOOC: Cast iron is the most widely used engineering material, and also the most recycled of all materials
- Cast iron is the most widely used engineering material, and also the most recycled of all materials
- 中国大学MOOC: Concrete is a polluting material, so all green building materials can be used to replace it.