1. 读对话，选择符合对话内容的选项，并把其字母编号写在括号内。
Aiwen: Hello. Are you free, Tim?
Tim: No. I am sleeping. It is 5:00 in Dubai.
Aiwen: Sorry. It is now 9:00 in Guangzhou now. I'll call you next time.
() (1) A. This is a good time for Aiwen and Tim to talk.
B. Dubai is four hours behind Guangzhou.
Aiwen: What are you doing in Sydney, Jack?
Jack: It's 21:30 now and I am reading before bed. Is it 19:30 now in Guangzhou? Are you free to talk now?
Aiwen: Yes. I am helping mum with housework.
Jack: Good. We can talk for 10 minutes.
() (2) A. This is a good time for Aiwen and Jack to talk.
B. Sydney is 2 hours behind Guangzhou.
Aiwen: When can we talk next time?
Lily: I am usually free from 20:00 to 22:00 New York time.
Aiwen: Well. I am free from 8:00 to 10:00 in Guangzhou. I want to go to the bookstore. I can call at 9:00 Guangzhou time.
Lily: Great. Talk later.
() (3) A. Nine o'clock is a good time for Aiwen and Lily to talk.
B. New York and Guangzhou have 2 hours time difference.

1. (1) B (2) A (3) A

【解析】
(1) 根据对话内容，广州时间为9:00，迪拜时间为5:00，9-5=4，可知迪拜比广州晚4小时，B选项正确；Tim正在睡觉，此时并非适合通话的时间，A选项错误。
(2) 根据对话内容，Jack和Aiwen约定可以通话10分钟，说明此时是适合聊天的时间，A选项正确；悉尼时间21:30，广州时间19:30，悉尼比广州早2小时，B选项错误。
(3) 根据对话内容，Lily纽约时间20:00-22:00有空，Aiwen提出广州时间9:00打电话时Lily同意，说明此时适合通话，A选项正确；纽约和广州的时差并非2小时，B选项错误。
【答案】
(1) B (2) A (3) A
【知识点】
时差计算、细节信息匹配
【点评】
本题以跨城市通话对话为载体，考查学生对时差的计算能力及对话细节信息的提取判断能力，需准确对比不同城市的时间数据，理清时差关系与合适通话时机。
【难度系数】
0.6