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Choi:All other factors being equal,children whose parents earned doctorates are more likely to earn a doctorate than children whose parents did not earn doctorates.
Hart:But consider this:Over 70 percent of all doctorates holders do not have a parent who also holds a doctorate.
Which of the following is the most accurate evaluation of Hart's reply?
A.It establsihes that Choi's claim is an exaggeration.
B.If true,it effectively demonstrates that Choi's claim cannot be accurate.
C.It is consistent with Choi's claim.正解
D.It provides alternative reasons for accepting Choi's claim.
E.It mistakes what is necessary for an event with what is sufficient to determine that the event will occur.
。解释里说Hart 的解释是一种scope shift,因为C讨论的是那些父母是否有博士学位的孩子，而H说的是已经获得博士学位的人，所以讨论的对象范围不一样，所以还是有可能H说的这百分之70的有博士学位的人他们将来的孩子比没有博士学位的人的孩子更有可能获得博士学位。因此H的说法和C的说法不冲突，不inconsistent就是consistent.
但是我觉得C与H 讨论的范围是一致的。H说有博士学位而父母不是博士的人占70%，那么有博士学位且父母又是博士的人占30%，与C说的父母是博士的人比父母不是博士的人更可能获得博士学位，这两种说法是冲突的，因此选B。
To promote off-season business,Mt.Dunmore Lodge made tha following "Welcome Back" offer to winter guests:Guests who rent a room for at least a week during ski season can come back during the summer and get 25 percent off the standard summer price of any room they rent.After the summer passed,the owners of the lodge determined that the majority of their guests had taken advantage of the "Welcome Back" offer and paid the reduced rates.However,they were surprised to find they still managed to rent more rooms at full price than they did at the discount rate.
Which of the following,if true,most helps to explain the apparent discrepancy in the passage?
A Most of the duests who stayed at Mt.Dunmore Lodge during the winter did not stay for a full week .
B.Those guests taking advantage of the "Welcome Back" discount were more likely to bring their families with them than were those guests who were paying full price.正解
C.Some of the guests who received the "Welcome Back" discount also received a 10 percent rate reduction through their auto club.
D.To pay for the construction of a new gymnasium and a new pool,the owners of the lodge raised their summer prices considerably.
E.On average,guests who took advantage of the "Welcome Back" discount spent more money at the hotel on additional goods and services than guests who paid full price for their rooms.
解释里说从B 可以知道，利用了这个折扣的人更倾向于带着家人一起来，意味着一个房间住的有多个人，因此订的房间总数就少，那些付全款的人更倾向于一个人来，所以一个房间只住一个人，那么房间数就多。
但是我的问题是， guest的概念。既然majority of the guests利用了这个折扣，假设这部分guest有两百人，那这两百个人每人带2个人来去度假，那也有两百个房间，而假设没有利用折扣的guest有50个，他们都是一个人来的，付全款的房间数小于折扣的房间数，与原文冲突。
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发表于 2014-9-17 19:27:43
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