8. The researchers had divergent opinions on the factors that contribute to aging. The findings of their studies were _____.
(A) synonymous
(B) formidable
(C) indigenous
(D) equivocal
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統計: A(13), B(24), C(33), D(108), E(0) #869899
統計: A(13), B(24), C(33), D(108), E(0) #869899