| A | B |
| thumb | the short, thick finger on each o;f your hands |
| hidden | kept out of sight |
| brain | the part of your body that is inside your head |
| amount | a quantity |
| skull | bony framework of the head in animals that have a backbone |
| telescope | an instrument that makes distant objects seem larger and nearer |
| messages | information sent by one person to another |
| microscope | a device for looking at things too small to be seen with the naked eye |
| pupil | the opening in the center of the iris of the eye |
| mirror | a glass in which you can see yourself |