Part One Error Correction of Sentences with Four Underlined Parts (单句划线改错) 1
Key to Part One 30
Part Two Error Correction of Sentences Without Underlined Parts (单句不划线改错) 45
Unit 1 加词改错 45
Unit 2 去词改错 50
Unit 3 变词改错 54
Unit 4 综合改错 58
Key to Part Two 65
Part Three Error Correction of Passages (段落改错) 79
Key to Part Three 129