问题
单项选择题
A parent reports that his 2-year-old child often fails when running. The nurse interprets this as indicating which of the following as a normal aspect of a toddler's vision
A．Near-sightedness.
B．Far-sightedness.
C．Binocular vision.
D．Strabismus.
答案
参考答案：A
解析：Until age 7 years, children are normally myopic and nearsighted. Additionally toddlers lack motor coordination and their depth perception is not well developed, placing them at risk for falling.