One may have to read something a second time if ______.

A．Pupils should be trained to reach quickly the stage of reading without having to concentrate on the separate symbols.
B．Pupils should look at each printed symbol for its meaning as well as for its shape.
C．Teachers should help their pupils avoid looking at the shape of the printed symbols.
D．Teachers should tell their pupils the different stages of their study.

A．word-by-word reading is highly inefficient
B．the pupil’s eyes should focus on groups of syllables instead of single syllables
C．pupils have to move their eyes back and forth when reading
D．finger-pointing in reading helps the pupil concentrate on meaning