①A+C→甲 ②B+C→乙 ③A+乙→B+甲，请回答下列问题：
下图中A，B，C，D四地位于同一纬度，其昼夜温差最小的是（ ）
亚洲是我们生活的大洲，它地域辽阔，文化多样．读图，回答下列问题：
—So you gave Mary your dictionary?
— ______.She said she'd return it to me when she could afford her own.
