1, to expand reading horizons
The so-called reading field of vision refers to the eye in the "gaze" at the moment can receive or cover the printed symbols. Ordinary readers can receive two English words at a standstill while a reader with a good reading ability can see four or so words at a glance, but a poor reader can only receive one or less words at a glance. Therefore, in equal reading time, the narrow field of vision of the reader to see the word much less, if the regular diplopia, the