32. According to the passage, which of the following is an advantage of Aeroponics?
(A) It uses less water.
(B) It produces more electricity.
(C) It needs larger space.
(D) It requires no maintenance.
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統計: A(8), B(2), C(3), D(5), E(0) #4027958
統計: A(8), B(2), C(3), D(5), E(0) #4027958