9. It is_____ that in such a wide and varied subject as corrosion some aspects were left out.
(A) inevitable
(B) invisible
(C) invincible
(D)incredible

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統計： A(14), B(12), C(4), D(15), E(0) #1038467

詳解 (共 1 筆)

#4237146
A:inevitable=不可避免的 ...
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