PEST分析涉及的要素包括______
A．政治与法律环境 B．经济环境C．机会 D．社会和物质环境
参考答案：A,B,D,E
—How was your trip to London?
—Great. I was helped by an organization. Otherwise, I ______ it.
A．wouldn’t afford
B．hadn’t afforded
C．wouldn’t have afforded
D．needn’t have afforded
下列哪项不是寒冷疗法的作用机制()
A．开始血管收缩，继之血管扩张
B．降低毛细血管壁通透性
C．降低新陈代谢(抑制炎症)
D．始疼痛减轻，继之加重疼痛(如寒冷麻醉、止痛)
E．降低肌肉活动性(抑制肌肉痉挛)
