短文改错。
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文,文中共有l0 处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧) ，并在其下面写出该加的词。
删除：把多余的词用斜线( ＼) 划掉。
修改：在错的词下划一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改l0 处，多者( 从第11 处起) 不计分。
Nowadays, it is very easily to find a student who is nearsighted. What’s worse, the number of
nearsighted students are still increasing. From my point of view, there are many reason that can
cause nearsightedness. First and foremost, the wrong posture will easily result from nearsightedness.
Read in the dark places can lead to nearsightedness as well as. Moreover, too much reading without
a rest can be other important reason. My dear friends, it is high time that we paid attention to protect
our eyes. The most useful method is? do eye exercises more often and relax for a while after reading.
Watching green trees could also do good to the eyes.
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