問題詳情

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

參考答案

答案:A
難度:適中0.56
書單:沒有書單,新增

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