______ is said to each other by the two persons who have just be

______ is said to each other by the two persons who have just been introduced to each other.
A、How are you
B、How do you do
C、Fine, thank you
D、How is everything
【正确答案】：B
【题目解析】：答案选B。How do you do is said to each other by the two persons who have just been introduced to each other.参见教材P143。