22.（ ）

(单选题)What is the main purpose of this story? (单选题)What can we learn from the passage? (单选题)How did the doctor know that the man burnt his knee? (单选题)What was the doctor doing? (单选题)Where did the story happen? (单选题)60.（ ） (单选题)59.（ ） (单选题)58.（ ） (单选题)57.（ ） (单选题)56.（ ）