题目内容：
回答题Directions:
You will hear four dialogues or monologues. Before listening to each one, you will have 5 seconds to read each of the questions which accompany it. While listening, answer each question by choosing A, B, C or D.After listening, you will have 10 seconds to check your answer to each question. You will hear the recording only once.
Questions 11 -13 are based on the following dialogue between an employer and an employee.
How old is Katie? A．16
B．17
C．18.
D．19.
参考答案：
答案解析：