2019.6月上海高考英语十一选十- 你做对了几题呢

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文章作者: 程林华

发布时间: 2019-06-09 00:01 访问量:30

Myopia,or short-sightedness, is a condition in which distant objects appear blurred,but closer objects can usually be seen in sharp focus.

           Its biological basis is an eye that,during childhood, has grown too long for its optical power. The focal plane forimages of distant objects ends up in front of the retina, causing out-of-focus perception.


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