A plastic is a synthetic material which can be molded into any desired shape and which uses an organic substance as a binder.
举一反三
- Fuel is (any) substance or material (that reacts) chemically (with) another substance or material to produce (hot). A: any B: that reacts C: with D: hot
- Which material can be used for the burs?
- Plastics is a kind of ______ which is widely used in industry. A: mass B: substance C: matter D: material
- Which material can be used for the drill handle?
- A chemical is any aspect of a substance which is only seen by means of a chemical reaction (反应).