<文意選填>[題組:第21題到第30題]Ancient civilizations throughout the world engaged in different types of fish farming. The indigenous people in Australia are believed to have raised eels as early as 6000 BC. Abundant ______ indicates they developed volcanic floodplains near Lake Condah into channels and dams, then captured eels and preserved them to eat all year round. (A) spread (B) culture (C) trapped (D) adored (E) alive (F) monopoly (G) delicious (H) illegal (I) supply (J) wealthier (K) evidence (L) treated
