这个逻辑好象不太难,但一时就是想不通,谁能雪中送炭一下?

hsuehM

Which of the following most logically completes the argument?

 

Researchers recently asked dozens of shoppers, chosen at random coming out of a FoodBasket supermarket, what they had purchased.  The prices of the very same items at the nearest ShopperKing supermarket were totaled and compared with the FoodBasket total.  The ShopperKing totals averaged five percent higher than the FoodBasket totals.  Nevertheless, this result does not necessarily show that shoppers at ShopperKing would save money overall by shopping at FoodBasket instead, since ______.

 

1. shoppers who shop regularly at a given supermarket generally choose that store for the low prices offered on the items that they purchase most often
2. for shoppers with more than 20 items, the ShopperKing totals averaged more than five percent higher than the FoodBasket totals
3. many shoppers consider factors other than price in choosing the supermarket at which they shop most regularly
4. there is little variation from month to month in the overall quantity of purchases made at supermarkets by a given shopper
5. none of the people who conducted the research were employees of the FoodBasket supermarket

答案是A,一时怎么也想不通,谁能解释一下,谢谢so much!

neo1001

原文说，对于相同的物品，SK的加强平均比FB的高5％。然而，这个结果并不能表明SK的顾客去FB买东西的话就可以省钱，因为。。。

A regularly地去某一间超市买东西的人通常是他们最经常买的东西在那间超市特别便宜

原文只是说SK的东西平均比FB高5％(并不是所有东西都便宜5％），而如果人们都是choose that store for the low prices offered on the items that they purchase most often，那么SK的顾客去FB买东西就不会省钱（因为他们各自经常买的东西，SK都比FB便宜）。

hsuehM

谢谢~~~