资源的区域社会需求主要受到以下哪些因素的影响（）
A、人口数量与结构
B、技术水平
C、消费者偏好
D、区域产业结构
参考答案：A, B, D
公文写作:
决定的结构和写法
A. Experts in the medical field have doubled in the past five years. B. Both health food and medical authorities have recommended Vitamin E. C. The health food experts are not authorized to comment on Vitamin E. D. The selling of Vitamin E must be approved by the leading medical authorities.
