31. Researchers found that sharks are predators at the top of the food chain. Over the sharks’ lifetimes, the highest concentrations of toxic substances such as mercury, methylmercury, cadmium and arsenic ______in their bodies.
(A) accumulate
(B) accelerate
(C) decorate
(D) convey

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統計： A(226), B(43), C(26), D(29), E(0) #2546266

蘇嘉韻

B1 · 2021/04/30

#4688141

(A) accumulate 累積，積聚；積攢

(B) accelerate使增速；促進；促使……早日發生
(C) decorate裝飾，修飾[（+with）]；粉刷；油漆
(D) convey運送，搬運，轉運[（+from/to）]；傳播（聲音等）