下列物质的性质中，属于化学性质的是（   ）

能使带火星的木条复燃的气体是____ ，能使澄清的石灰水变浑浊的气体是____，空气中含量最多的气体是____ ．

增加：在缺词处加一个漏词符号（∧），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10处，多者（从第11处起）不计分。

    People often come up across the word ＂SOHO＂ in the newspaper or magazine. But not everyone knows how it means. As the matter of fact, ＂SOHO＂ means ＂Small Office/ Home Office＂. Now many people use computer, so it is possible for you to work at their homes. They needn't go to offices. They can usually work fast and better at home. By work at home, they save a lot of time and energy. They needn't spend time on the road but they won't feel tired or angry because the bad traffic. Maybe in the future, more and more people would be＂SOHO＂ workers.