听下面一段材料,回答第1-2小题。 |
1. What are the man and the woman talking about? |
A. How paper is made from trees. B. How much paper Americans use. C. Why so much paper is used. |
2. How many trees do Americans cut down in one year? |
A. 50 million. B. 85 million. C. 850 million. |