原式=12×12+22×22-2×33×3
=14+12-2=-54．
— did you go to Yunnan?
—Three years ago.[ ]
A. When
B. Where
C. What
治疗垂体性尿崩症的药物：
A．垂体后叶素
B．麦角新碱
C．米索前列腺素
D．利托君
E．缩宫素
