問題詳情

4. The dumping of highly radioactive nuclear wastes into the Pacific Ocean constitutes apotential ___________ to a process of global radioactive contamination.
(A) trigger
(B) shield
(C) stifle
(D) halt

參考答案

答案:A
難度:適中0.549133
統計:A(95),B(21),C(21),D(19),E(0)

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