GWD上的逻辑--路过NN进来看看这到有争议的题目吧

从容自适

In a study conducted in Pennsylvania, servers in various restaurants wrote “Thank you” on randomly selected bills before presenting the bills to their customers.  Tips on these bills were an average of three percentage points higher than tips on bills without the message.  Therefore, if servers in Pennsylvania regularly wrote “Thank you” on restaurant bills, their average income from tips would be significantly higher than it otherwise would have been.

 

Which of the following is an assumption on which the argument relies?

 

A.      The “Thank you” messages would have the same impact on regular patrons of a restaurant as they would on occasional patrons of the same restaurant.

B.       Regularly seeing “Thank you” written on their bills would not lead restaurant patrons to revert to their earlier tipping habits.

C.      The written “Thank you” reminds restaurant patrons that tips constitute a significant part of the income of many food servers.

D.      The rate at which people tip food servers in Pennsylvania does not vary with how expensive a restaurant is.

E.       Virtually all patrons of the Pennsylvania restaurants in the study who were given a bill with “Thank you” written on it left a larger tip than they otherwise would have.

  有选B的 也有D 的 望高人指点

buda

30. GWD17-Q30:A

In a study conducted in Pennsylvania, servers in various restaurants wrote “Thank you” on randomly selected bills before presenting the bills to their customers.  Tips on these bills were an average of three percentage points higher than tips on bills without the message.  Therefore, if servers in Pennsylvania regularly wrote “Thank you” on restaurant bills, their average income from tips would be significantly higher than it otherwise would have been.

 

Which of the following is an assumption on which the argument relies?

 

A.      The “Thank you” messages would have the same impact on regular patrons of a restaurant as they would on occasional patrons of the same restaurant.

B.      Regularly seeing “Thank you” written on their bills would not lead restaurant patrons to revert to their earlier tipping habits.

C.      The written “Thank you” reminds restaurant patrons that tips constitute a significant part of the income of many food servers.

D.      The rate at which people tip food servers in Pennsylvania does not vary with how expensive a restaurant is.

E.       Virtually all patrons of the Pennsylvania restaurants in the study who were given a bill with “Thank you” written on it left a larger tip than they otherwise would have.

 

  解析：在账单上写“Thank you”，小费比没有写的高3%。因此如果服务生们都这么干，他们的小费收入将比不这么干高很多。问假设

思路：

A：和顾客的来访频率没有关系

B：正确，频繁的看到“Thank you”不会影响他们之前的付费习惯。比如说看多了就习惯了也就没有感觉了。

C：不是说“Thank you”的功能，而是讨论最终是否会付费增加。就算是提醒了，付费没有增加，也起不到假设作用

D：和付费的比率没有关系。

E：只是描述一个事实，和普遍“Thank you”没有关系。

lysun

我觉得是B

“如果人们习惯了看见‘谢谢’，就不会像偶然看到时那样心情好，也许就不会多付小费了”假设这个情况不存在，题目中的结论才成立~

D好像跟题目没太大关系

个人意见

从容自适

谢谢明白了