TOEFL Listening: TPO-TOEFL阅读TPO - MI7VO83DLJOR4DEQN$

Which of the following statements about the availability of water in the Mayan homeland is supported by paragraph 3? A. The construction of wells was an uncommon practice in both the north and the south because it was too difficult to dig through the karst. B. In most areas in the north and the south, rainwater was absorbed directly into the porous karst. C. The water table was an important resource for agriculture in both the north and the south of the Yucatan Peninsula. D. The lack of surface water in both the north and the south was probably due to the fact that most of it was quickly used up for agricultural purposes.