A、About four days. B、About three days. C、About two days. D、About one day. C女士告知男士将于周二到达纽约，周四下午将从纽约出发去底特律，即在纽约大约待两天，故选C项。

W: Good afternoon, Mr. Peterson. (19) I’ve drafted a schedule for your business trip to America and I’m calling to consult with you to get it right.
M: Good, please go ahead.
W: I’ve managed to book you a flight for New York at the time you wanted. (21) It will take off at 9:00 a. m. next Tuesday and land in New York at 11: 40 p.m. Mr. Anderson will meet you at the airport and drive you to the Welson Hotel.  (20) It is said to be the most reputable hotel in New York. I’ve booked a suite for you there.
M: That sounds great !
W: On Wednesday morning, you’ll have an interview with Mr. Smith, the general manager of New York branch. And in the afternoon, you are going to the New Product Exhibition.  Next morning, you will visit their factory.
M: OK. (21) Then I shall go to Detroit on Thursday afternoon. Is that right?
W. (21) Yes, in that case, you will have to go there by train. It will take you about six hours from New York to Detroit.
M. All right.
W: OK. You are also invited to attend the banquet at their headquarters on Friday evening.  Then on Saturday morning, you will fly straight back at 11:30.
M. Wow, it is really a tight schedule. (22) By the way, what’s the weather will be like in New York and Detroit during next week?
W: (22) Well, I will cheek and call you hack, OK?
M: Sure. Thank you!