問題補充：
單選題
Many manufacturers were accused of concentrating too heavily on cost reduction, often at the ______ of the quality of their products.A.expenseB.exposureC.expansionD.expectation
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熱心網(wǎng)友 1樓
A解析這題考查詞義辨析：expense費用，exposure暴露expansion擴大expectation 期待，at the expense of“以…為代價“。選A。
