725. The research team invented some _____ devices to help people to save energy in the daily life.
(A) ingenious
(B) reluctant
(C) trivial
(D) stubborn

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統計： A(59), B(13), C(20), D(6), E(0) #1592935

詳解 (共 1 筆)

#2302108

（A)ingenious精巧的

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