The reality of governance is rarely-------; institutions do not operate according to mechanical laws, they evolve organically.

A． piquant: odor
B． ruined: building
C． grating: sound
D． infamous: performance
E． epidemic: malady

A． bottle: tonic
B． incubator: microorganism
C． orchard: underbrush
D． pipeline: gas
E． washroom: hygiene