Look at the picture on the slide, and then answer the questions what is clearly visible, such as color, position of the circle full circle, three-dimensional objects, point arrow no.
View pictures in a slide and then answer the question of what to see, such as color, position of the circle full circle, three-dimensional objects, the number of arrows.
Look at the picture in the slide and answer what clear vision, such as color, position of the circle full band, three-dimensional objects, the number of the arrow.