75. The word ‟conundrum” in the second paragraph is closest in meaning to ________.
(A) panacea
(B) breakthrough
(C) consensus
(D) dilemma
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統計: A(0), B(0), C(0), D(2), E(0) #3923419
統計: A(0), B(0), C(0), D(2), E(0) #3923419