阿摩線上測驗
12. The ancient manuscript _____ by scholars and was later discovered by researchers who were amazed by its historical significance.
(A) has carefully preserved
(B) carefully preserved
(C) was carefully preserved
(D) was carefully preserving
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統計： A(1), B(1), C(4), D(0), E(0) #3915413
統計： A(1), B(1), C(4), D(0), E(0) #3915413
