19. The chemist didn't express his theory clearly, so it remained _____ to all but a few scientists.
(A) magnitude
(B) obscure
(C) dispel
(D) explicit

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統計： A(0), B(1), C(0), D(0), E(0) #4041920

詳解 (共 1 筆)

#7511268
正確答案是 (B) obscure。  ...
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