短文改错（共10小题；每小题1分，满分10分）

文中共有10处语言错误，每句中最多有两处。错误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．每处错误及其修改仅限一词。

2．只允许修改10处，多者(从第11处起)不计分。

My mother is a village woman, already in her fifty. She has little school education, and she knows that knowledge is very important to young people. She often asked me how I am getting along my studies. She does everything she can for me, so that I can spend more time study.

Once my mother was ill and stayed in the bed for several day. When I got home at night, I found the light was still off and she was making new clothes for me! I was deeply moved that tears came to my eyes. Such is her mother, a kind and hard-working woman. And I will respect and love her forever.

有关臭氧层破坏的说法，正确的是（）

A、人类使用电冰箱、空调释放大量的硫氧化物和氮氧化物所致

B、臭氧主要分布在近地面的对流层，容易被人类活动所破坏

C、臭氧层空洞的出现，使世界各地区降水和干湿状况将发生变化

D、保护臭氧层的主要措施是逐步淘汰破坏臭氧层物质的排放