单项选择题
W: Look, Mr. Harris. This is the Great Pyramid.
M: Oh, yes.., it looks very high!
W: It’s about 137 meters high.
M: How long are the sides
W: They’re 230 meters.
M: It’s incredible! Can we go inside
W: I’m sorry, Mr. Harris. It’s under repair these days.
M: What a pity.
A. Teacher and student.
B. Guide and tourist.
C. Boy friend and girl friend.
D. Boss and secretary.