填空题
You will hear a talk. As you listen, you must answer questions 21—30 by writing NO MORE THAN THREE words in the space provided on the right. You will hear the talk TWICE.

填空题 What natural resources did the southern part have?

填空题 In which part can we find the general wealth of the Mayan population?

填空题 In terms of climate, what do you know about the southern area?

填空题 In which area did most of the Mayan population live?

填空题 When was the Mayan Classical Period?

填空题 In what sense was the central area important during the Classical Period?

填空题 What caused problems for the farmers near the market centers?

填空题 Where did some Mayans go after they left the central area?

填空题 What were the market centers used for?

填空题 What caused the collapse of the market centers according to the talk?