问题补充：
---Hello! Wu Dong. Li Ming? --- Speaking.
A. This is; Is that
B. That is; Is this
C. I’m; Are you
D. That is; Are you
答案：
(答案→)A. This is; Is that
B. That is; Is this
C. I’m; Are you
D. That is; Are you
解析：句意：你好，我是吴东。你是李明吗？请讲。在电话中，用this 指代我，that指代你，故选A
