题目

       “Hey, don't read in the hallway. Your eyesight will be damaged.” You must have heard such warnings many times. Don't read in dim (暗的) light! This is one of the “pearls of wisdom” that are supposed to help us live healthy lives. Such common beliefs, however, lack scientific basis, according to a paper published recently in the British Medical Journal.        Do you believe in the following everyday wisdom?        Reading in dim light ruins your eyesight.        In dim light, you might blink (眨眼) more, feel discomfort from drying and have trouble f() 1. —Why not John a toy car for his birthday? .—Good idea!He is crazy about cars.   A. buy   B. buying   C. to buy   D. buys