4. B
5. C
6. B
7. B
8. B
9. A
10. B
11. A
12. C
13 A
14. A
15. C

五、
1. short
2. visitor
3. collecting
4. friends
5. Perhaps

六、
A 4
B 8
A 1
B 9
A 3
B 6
A 2
B 7
A 5

4. B
5. C
6. B
7. B
8. B
9. A
10. B
11. A
12. C
13 A
14. A
15. C

五、
1. short
2. visitor
3. collecting
4. friends
5. Perhaps

六、
A 4
B 8
A 1
B 9
A 3
B 6
A 2
B 7
A 5