右主支气管与正中矢状面成多少度角（）
A.15°～25°
B.20°～35°
C.0°～30°
D.30°～40°
E.40°～50°
参考答案：B
炎症治疗原则有（）
A.除去病因
B.从整体出发，改善机体内部平衡
C.改变机体局部反应
D.促进机能恢复
E.全部都是
—Has Judy returned from Hong Kong? I’d like to meet her.
—I’m sorry, but she _______ back here only for last weekend.[ ]
A. has been
B. was
C. had been
D. would be
