单选题Many manufacturers were a

问题补充：

单选题Manymanufacturerswereaccusedofconcentratingtooheavilyoncostreduction,oftenatthe______ofthequalityoftheirproducts.A.expenseB.exposureC.expansionD.expectation

答案：

A解析这题考查词义辨析：expense费用，exposure暴露expansion扩大expectation 期待，at the expense of“以…为代价“。选A。