Though managers of commercial shellfish beds in many countries monitor the presence of pollutants using mice, this method is ethically______and too expensive for many developing countries, small operations or amateur fishermen.

A． analogy : simile
B． ennui : rehearsal
C． commitment : equivocation
D． exhortation : elocution
E． harmony : mediation

A． draconian
B． abstract
C． revolutionary
D． holistic
E． sartorial