According to a UN report，one third of the world population have no to clean drinking water and health care.
A. means
B. approach
C. channel
D. access
网友回答
A. means
B. approach
C. channel
(答案→)D. access
解析：本题考查名词。Means方法；approach 靠近；channel 频道。Have access to 有权进入…；可以使用….句意：根据联合国报告，三分之一的世界人口没有干净的饮用水和医疗照顾。