TOEFL Listening: TPO-TOEFL阅读TPO - 5NAKO0UFUQID58S1N$

According to paragraph 2, what is the relationship between permeability and porosity? A. The more pores a rock has, the higher its porosity but the lower its permeability. B. Rocks with many internal spaces that are not connected with each other will have high porosity but low permeability. C. If water flows through a rock easily, it has high permeability but low porosity. D. Rocks that have high permeability have high porosity and vice versa.