单选题 By definition, a discount store offers standard A merchandises at prices B lower than those of more conventional merchants. It is able to do so by accepting a lower profit margin, by purchasing C at higher volume , and by D paying workers less .
【正确答案】 A
【答案解析】解析：merchandises一merchandise。句意：根据定义，折扣店与传统商店相比能以更低廉的价格销售同样的商品，而它之所以能这样做是因为它购入的量更大、付给员工的钱更少，也就能接受更低的利润率。merchandise“商品”本身就是集合名词，没有复数形式，所以A项应为merchandise。