The workers trapped in the coal mine never got ________ because they encouraged one another, and

after 9 days and nights they were all saved.[ ]

A. desperate  

B. ready  

C. cheerful  

D. surprised

下列关于房地产开发经营观念的说法正确的是（）。

A.产品观念的企业行为是提高质量，获取利润

B.市场营销观念适应的市场是卖方市场

C.推销观念适应的市场是卖方市场向买方市场过渡

D.社会营销观念的特点是以满足目标市场需求、兼顾社会利益取胜

E.生产观念适应的市场是卖方市场