Unfortunately, the woman's hat ()my view of the stage.
A. blocked up
B. obstructed
C. prevented
D. interfered
我国现存第一部治疗肺痨的专书是
A. 《千金要方》
B. 《济生方》
C. 《十药神书》
D. 《理虚元鉴》
E. 《内经》
以下为不溶型薄膜衣材料的是
A. HPMC
B. EC
C. 邻苯二甲酸羟丙基甲基纤维素
D. 丙烯酸树脂Ⅱ号
E. 丙烯酸树脂Ⅳ号
The No. 5 subway line, ()in October, 2007, has greatly improved the traffic conditions in Beijing.
A. opened
B. was opened
C. being opened
D. to be opened