阿摩線上測驗
77. It has been difficult to discover what happened to the original Mayflower because ____.
(A) many ships bore the same name
(B) it was such a small vessel
(C) the search was begun too early
(D) it has become impregnated with salt
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統計： A(1), B(0), C(0), D(0), E(0) #3382524
統計： A(1), B(0), C(0), D(0), E(0) #3382524
