题目

How long will the registration last? Hi, Mary. I just wanted to go over the schedule for the meeting, you know, just to be on the safe side.<br />Okay, the registration starts at 9 and goes to 10.30. Then the meeting will begin at 10.40. A . One hour. B . One and a half hours. C . One hour and forty minutes. 答案：B

查看本题答案和解析