問題詳情

48. What nutrient(s) are soils rich in so people can benefit by eating them?
(A) Copper.
(B) Bacteria.
(C) Parasites.
(D) Pollutants.

參考答案

答案:A
難度:簡單0.721902
統計:A(501),B(91),C(45),D(22),E(0)

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