缘起性空讲的是什么内容？
参考答案：
讲因果。从果地探讨因，又从因地推论到果。
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
小民用三棱镜把太阳光分解成7种色光，其中色光的三原色是______．
