我国首次进行数字音频广播试播的城市是（）
A.深圳
B.上海
C.佛山
D.东莞
参考答案：C
The smile on Mother's face suggested she____________. [ ]
A. was glad
B. was surprised
C. is pleased
D. was annoyed
下列措施中可减少鼻咽纤维血管瘤术中出血的是：（）
A．DSA管栓塞
B．硬腭进路
C．控制性低血
D．颈外动脉结扎
E．鼻内镜手术
was annoyed