31. After the energy crisis, oil companies started __________ their energy sources, not depending on
key suppliers.
(A)exchanging
(B)authorizing
(C)minimizing
(D)diversifying
詳解 (共 3 筆)
未解鎖
crisis 危機；緊急關頭；轉折點；病...
未解鎖
After the energy cri...
未解鎖
(A)exchanging 交換(B)a...
私人筆記 (共 1 筆)
未解鎖
exchanging 兌換、交換 au...
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