据报道,我国学生近视率居世界第一。造成这一现象的原因是多方面的, 请你以 'Why are more and more children getting short-sighted?' 为题, 写一篇英语短文。 内容主要包括： 1. 造成学生近视的原因； 2. 如何保护视力？ 注意: 1.词数120左右； 2.可以适当增加细节, 以使行文连贯； 3.短文的开头已经写好, 不计入总词数。 参考词汇: 近视率 rate of myopia Why are more and more children getting short-sighted? It is reported that the rate of myopia of Chinese students is ranked as the highest in the world _______________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ________________________________________ _______________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ________________________________________ _______________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ____________________________________________________________________________________________ ________________________________________