Complete the dialogue with proper words or sentences.

A: Good morning, madam!

B: Good morning, sir!

A: You look worried. (56)                            ?

B: My son got lost when I was talking with my friend in the park. I’ve looked for him everywhere, but I can’t find him. What shall I do?

A: (57)                   . Tell us something about him, and we can help you.

B: Thank you, sir.

A: Now please tell me (58)                      .

B: He’s six years old.

A: (59)                      ?

B: He’s thin and tall with big eyes.

A: What is he wearing today?

B: He’s wearing a white T-shirt and blue jeans.

A: (60)                      ?

B: It’s 13803677057.

A: OK. We’ll call you as soon as we find him.

B: Thank you very much.

下列对于再生障碍性贫血的描述，正确的是（）

A.无淋巴结肿大

B.骨髓增生活跃

C.有发热、贫血、出血倾向

D.三系有两系以上减少

E.可见局灶巨核细胞增多