The optics of the second book of science in grade seven is very difficult. I don't understand. Who can teach me?

1. The color of a transparent object depends on the color of the light it transmits, such as blue glass, because it only transmits blue light, and so on.

2. An opaque object depends on the color of the light it reflects, such as a red object, because it only reflects red light, and all other colors of light are absorbed by the object.