阿摩線上測驗
32. Due to the recession, many companies are willing to provide services at a much lower profit ________ than they used to.
(A) warning
(B) margin
(C) visibility
(D) penetration
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統計： A(0), B(3), C(1), D(0), E(0) #3361954
統計： A(0), B(3), C(1), D(0), E(0) #3361954
