改错题
Directions: This part consists of a short passage. In this passage, there are altogether 10 mistakes, one in each numbered line. You are required to change a word, add a word or delete a word. If you add a word, put an insertion mark (∧) in the right place and write the missing word in the corresponding blank on your answer sheet. If you delete a word, cross it and put a slash (/) in the corresponding blank on your answer sheet. If you change a word, cross it and put your word in the corresponding blank on your answer sheet. Remember to write the correct number beside each blank on the answer sheet.