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(\)划掉.
修改:在错的词下画一横线, 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10处, 多者(从第11处起)不计分.
Rain is great importance to us. Without rain, our water supply would be cut off and we would die, so will plants and animals. Therefore, too much rain does a lot of harm to us. It floods fields, towns and cities, causes us great losses. So far man's control over rain had never ceased. If they can gain more effective control over rain, we will enjoy more free from nature. Fortunate, we human beings have taken steps, such as planting more trees and using weather forecasts, it helps avoid flood damage and protect our water supply. I am greatly convinced that only if we join the hands to fight our common enemy can we live a rosy life.