Ⅱ. 听对话根据你所听到的内容，选择正确的答案。每段对话读两遍。
6. Q: How does Jack study for a test?
A. By working with his friends. B. By taking notes.
C. By asking the teacher for help.
7. Q: What are they talking about?
A. Changing language.
B. Increasing population.
C. Developing country.
