第二节：请听4段大对话，并按要求做答。每段对话均读两遍。
听第一段大对话，回答第6和第7小题。
6. Where will the dinner party be held?
A. At Helen’s. B. At Paul’s. C. At Brown’s.
7. Why can’t Helen go to the party?
A. She is seriously ill. B. She doesn’t like dinner parties.
C. She has to stay at home.
