现在请听一段独白,完成第1至第3小题。 |
1.Which part is the most difficult one in the program? |
A. Searching. B.Collecting. C.Carrying. |
2. What color cans are for waste? |
A. Pink. B.Blue. C.White. |
3. What you hear might be____. |
A. an advertisement B.an introduction C.a piece of news |