38. Warning! ______ rocks are found in this area. Which word bellow is appropriate to fill in
the blank?
(A) un-shown
(B) un-name
(C) uncharted
(D) uncover
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統計: A(14), B(6), C(231), D(12), E(0) #2652722
統計: A(14), B(6), C(231), D(12), E(0) #2652722