IV. Reading Comprehension 12% ( A )We have all heard some of the common myt hs about how eyesight gets bad. Most people believe that reading in dim lightcauses poor eyesight, but that is untrue. Too little lights makes the eyes work harder, so they do get tired and strained. Eyestrain alsoresults from reading a lot, reading in bed, and watching too much television. However, although eyestrain may cause some pain orheadaches, it does not permanently damage eyesight. 50. What is the main idea of this passage?
(A)To warn people not to read too much.
(B) To clarify the myth about how one’s eyesight gets bad.
(C) To remind us that reading in poor light causes eyestrain.
(D)To explain why we have pain and headaches.