听一段对话，回答第 11、12 小题。
() 11. What is special about the Karst landform?
A. We can only see it under the ground.
B. It is one of the world’s top five landforms.
C. It is formed by surface water and underground water.
() 12. Where can we find the landform according to the dialogue?
A. In Africa.
B. In the USA.
C. In Japan.

听第一篇短文，回答第 13 至 15 小题。请根据短文内容，选择正确答案，完成信息记录表。

() 13. A. parents
B. classmates
C. friends
() 14. A. flowers
B. sunrise
C. waterfall
() 15. A. March
B. April
C. May