阿摩線上測驗
1. The accident was caused by the _____ of the reactor’s cooling system.
(A) science
(B) delivery
(C) failure
(D) triangle
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統計： A(37), B(92), C(387), D(22), E(0) #2906341
統計： A(37), B(92), C(387), D(22), E(0) #2906341
