阿摩線上測驗
13. ________ a nuclear plant go wrong, the impact on its surrounding area could be disastrous.
(A) If
(B) Unless
(C) Should
(D) Even if
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統計： A(209), B(15), C(263), D(4), E(0) #2363052
統計： A(209), B(15), C(263), D(4), E(0) #2363052
