文档介绍：1. To entice customers away petitors, Red Label supermarkets have begun offering discounts on home appliances to customers who spend $50 or more on any shopping trip to Red Label. Red Label executives claim that the discount program has been a huge ess, since cash register receipts of $50 or more are up thirty percent since the beginning of the program. (CLAIM是重点)
Which of the following, if true, most seriously weakens the claim of the Red Label executives?
(A) Most people who switched to Red Label after the program began spend more than $50 each time they shop at Red
(B) Most people whose average grocery bill is less than $50 would not be persuaded to spend more by any discount ,但是削弱前提事实。只能反对推测方向。错误。
(C) Most people who received discounts on home appliances through Red Label's program will shop at Red Label after the program ends. 加强
(D) Since the beginning of the discount program, most of the people who spend $50 or more at Red Label are people who have never before shopped there and whose average grocery bill has always been higher than $
(E) Almost all of the people who have begun spending $50 or more at Red Label since the discount program began are longtime customers who have increased the average amount of their shopping bills by making fewer trips. 承认前提,反对结论。正确。
2. Throughout the 1950's, there were increases in the numbers of dead birds found in agricultural areas after pesticide sprayings. Pesticide manufacturers claimed that the publicity given to bird deaths stimulated volunteers to look for dead birds, and that the increase in numbers reported was attributable to the increase in the number of people looking. 文章通过ATTRIBUTABLE TO 提供了因果关系。
Which of the following statements, if true, would help to refute the claim of the pesticide manufacturers? REFUTE:反驳,削弱。
(A)The publicity given to bird deaths was largely regional and never reached national proportions.
PUBLICITY是原因。结果是REPORT。
(B) Pesticide sprayings were timed to coinc