The passage implies that cellulose is a very porous substance because it contains______. A．a substance that creates pressure B．millions of tiny holes C．a substance that dissolves it D．liquid medicine
举一反三
- which substance in body contains iron?
- When<br/>the substance is measured by atomic absorption spectrophotometry, the<br/>state of the substance is ( ) A: Solid<br/>state B: Liquid C: Vapor<br/>state D: Supercritical<br/>state
- 1、which substance in body contains iron? A: Hemoglobin B: Opsin C: Immunoglobin D: PTH
- This curtain material is very good ______ . A: clothes B: cloth C: substance D: matter
- The physical properties are those properties of a substance that can be observed with changing the substance into other substances.