问题补充：
— My name is Jack Smith.
— Hi! I’m Jackson.
A. How do you do?
B. Nice to meet you again.
C. How about you?
D. How are you?
答案：
(答案→)A. How do you do?
B. Nice to meet you again.
C. How about you?
D. How are you?
解析：根据情景可以看出两个人初次见面的寒暄。“How do do you?”是初次见面时的问候语。
