题目内容：
Directions: This part consists of a short passage. In this passage, there are altogether 10 mistakes, one in each numbered line. You may have to change, word, add a word or delete a word. Mark out the mistakes and put the corrections in the blanks provided. If you change a word, cross it out and write the correct word in the corresponding blank. If you add a word, out an insertion mark (/\) in the right place and write the missing word in the blank. If you delete a word, cross it out and put a slash (/) in the blank.根据以下材料，回答题：
第（1）处填入正确答案__________.
参考答案：
答案解析：