13. Human ears can only take how many decibels of sounds?
A. 20 decibels
B. 30 decibels
C. 40 decibels
D. 50 decibels
14. What does this signage means
A. No Smoking
B. No Left Turn
C. No Parking
D. No Blowing of Horns
15. This animal can damage buildings and furniture.
A. Termites
B. Mosquito
C. Mice
D. Fly​