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Directions: You have 20 minutes to plan and write your response. Your response will be judged on the basis of the quality of your writing and on how well your response presents the points in the lecture and their relationship to the reading passage. Typically, an effective response will be 150 to 225 words.
题目原文：
Why erdstalls(tunnel systems)were dug?
听力材料：
反对这三种用途。
1. Erdstalls get rainfalls in winter so impossible to shelter livestocks, and no trends of grains and other crops shown.
2. Too small to contain even a family, easy to run out of oxygen, each has only one entrance which is impossible for people to escape.
3. People all share the same religious belief, however, only some communities built Erdstalls while other didn't.
阅读材料：
有三种可能的用途。
1. Shelter livestocks in winter and store grains
2. Hiding places(from attacks)
3. Religious purpose(residents believe in souls and spirits)
