Over two thirds of the population were believed to have no to the health care in the west

问题补充：

Over two thirds of the population were believed to have no to the health care in the west rural area in China.

A. aid

B. basis

C. belief

D. access

答案：

A. aid

B. basis

C. belief

(答案→)D. access

解析：词义辨析。 A. 援助 B.基础 C. 信仰 D.通路；使用权。句意：在中国西部农村地区，超过三分之二的人口被认为没有使用卫生保健的权利。故选D。