( )11. What are they talking about?
( )12. What can't it do according to the dialogue?
C
( )12. What can't it do according to the dialogue?
C
答案：11. C 12.C
(
B. lose weight
C. protect their eyes
(
B. doctors
C. patients
(
B. under the buildings
C. in the water
A
)13. A. improve their healthB. lose weight
C. protect their eyes
(
B
)14. A. nursesB. doctors
C. patients
(
B
)15. A. in the fireB. under the buildings
C. in the water
答案：13. A
14. B
15. B
14. B
15. B