男性，61岁，活动后心悸、气促5年，加重伴双下肢水肿3个月。查体：血压140／90m

从方框中选择恰当的句子完成下面的对话并将其序号写在后面的横线的相应位置上 .

A. She works in a hospital. B. She is a nurse. C. I want to be an actor. D. It’s exciting. E. It’s dangerous. F. She is a doctor. G. It’s difficult.

  A: Hi, Bob, What does your mother do ?
B: ______1_______.
A: Where does she work?
B: _____2______.
A: Do you want to be a doctor , too?
B: Oh ,  no ,no. ____3______
A: Why? I think it’s a hard job.
B: _____4___, but ___5___
A: Maybe.