A. the brand names of products they buy regularly B. why they purchase certain products C. the current interest rates on savings accounts. D. where to buy cheaper things 参考答案:B 答案解析:[解析] 细节题。根据第二段第二句所说,然而顾客通常都不明白为什么自己只会选择某种商品,而不是其它物品(Yet too often consumers have no idea of...their
第23题: [单项选择]银汞合金充填发生迟缓性膨胀的原因是() A. 研磨时间过长 B. 汞含量过少 C. 银含量过多 D. 充填压力过大 E. 水分渗透入银汞合金 参考答案:E 答案解析: