(二)录音中有一篇短文，听短文两遍，然后从每小题A、B、C中选出能回答每个问题的正确答案。(5分)
6. Which does the writer think is the most useful invention?
A. The computer. B. The television.
C. The bike.
7. Who was Thomas Edison?
A. A great American teacher.
B. A great American inventor.
C. A great English inventor.
