B.
А. opaque
19. Some light is passing through a glass of milk. What
D. hard
C. transparent
B. translucent
20. What are some examples of transparent material?
A. Clear glass, water and air
C. Wood, metal and fabric
B. Waxed paper and frosted glass
D. Concrete wall and wooden door
What will hannen to the hulh if you turned on the switch?