阿摩線上測驗
36. Many insulators are made from ______ materials.
(A) artificial
(B) endless
(C) deliberate
(D) beloved
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統計： A(13), B(1), C(1), D(2), E(0) #3887983
統計： A(13), B(1), C(1), D(2), E(0) #3887983
