腹痛绵绵，时作时止，喜热恶冷、大便溏薄，神疲气短，舌淡苔白，脉沉细，应选用（）
A．大建中汤
B．小建中汤
C．柴胡疏肝散
D．少腹逐瘀汤
参考答案：B
When I finished the story, Lenin jumped up from his chair and started pacing the floor, ______, deep in thought.
A．with his head bending
B．in his head bent
C．his head bending
D．his head bent
在测量β放射源的活度时，为了降低轫致辐射的影响，源的托盘最好采用（）
