41. Which of the following items is NOT mentioned as the use of straws?
(A) An alternative therapy.
(B) Fertilizers.
(C) Farming tools.
(D) Roofing materials.
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統計: A(37), B(19), C(72), D(8), E(0) #573417
統計: A(37), B(19), C(72), D(8), E(0) #573417