阿摩線上測驗
16. The substance can cause _____ damage to the body that cannot be undone even if you try hard.
(A) obligatory
(B) insightful
(C) permanent
(D) dedicated
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統計： A(12), B(35), C(313), D(20), E(0) #2106442
統計： A(12), B(35), C(313), D(20), E(0) #2106442
