短文改错。下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。
增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
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。
Wearing a pair of worn-out shoe, he wandered in the street. Though hungry, he could not find a penny
in his pockets. Unfortunate, he became homeless, everyone in her family had cut off connection with him.
Mild songs from the nearest house remind him of his every particular in acting. Up from now, he has star
in more than 80 films, that have entertained many people. He was considered to be a outstanding actor. It
was convincing that he would picked out to challenge the Oscar this year. But in now everything has changed.
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2z达到平衡时，若它们的物质的量满足n(x)+n(y)=n(z)，则y的转化率为( )