19.       Manufacturers of household appliances are still urging the public to purchase food processors. The various manufacturers’ advertisements all point out that the prices of these appliances are now lower than ever and that each food processor comes with a lifetime service warranty. In addition, many manufacturers offer sizable rebates to customers who purchase food processors within a given time period. With these incentives, the advertisements contend, people can hardly afford not to purchase food processors.

Which answer choice is a logically prior issue that the manufacturers’ advertisements fail to address?

(A) Whether the cost of repairs to the food processors over the years will cancel out the savings currently being offered

(B) Whether potential customers have enough uses for food processors to justify purchasing them

(C) Whether the heads of the companies manufacturing food processors own food processors themselves

(D) Whether the food processors currently being advertised will be outdated within the next five years（B）

(E) Whether accessories and replacement parts will be readily available at retail outlets

a logically prior issue 是削弱吗？如何解释这个提问呢？

哪个选项是广告没有提及，但却是从逻辑上应该考虑到的先决问题？＝ 削弱

rebate（不知红色是不是你想问的东东？如果不是就当我没说哦 ：））一般是厂家提供的购物返款券，一般的操作手法是这样的：一台微波炉标100美元rebate30美元，你实付款100美元，但是可以把小票寄回厂家，厂家会开一张30美元的支票寄回给你。