Answer:
1. lenses set in frames for wearing in front of the eyes to aid vision
2. help reduce the impact of noisy environment and risk of developing noise-induced hearing loss.
3. a tool should be operable with one hand. A power drill, for instance, should have buttons and switches in place so that the user can reverse the drill direction one-handed if needed. Tools designed with this in mind are much easier to use.
4. an object that can extend an individual's ability to modify features of the surrounding environment.
5. mainly used to cover our bodies, make us look more elegant and also to express where we are going.
