单项选择题 Relatively few politicians willingly forsake center stage, although a touch of（）on their parts now and again might well increase their popularity with the voting public.

单项选择题 PRODIGAL:（）

单项选择题 The earth is a planet bathed in light; it is therefore （）that many of the living organisms that have evolved on the earth have（）the biologically advantageous capacity to trap light energy.