求解答TAT请教逻辑讲义里的一道题 谢谢大家:D

cheerlee

Statistics over four consecutive years showed that four percent more automobile accidents happened

in California during the week following the switch to daylight saving time and during the week

following the switch back to standard time than occurred the week before each event. These statistics

show that these time changes adversely affect the alertness of California drivers.

  The conclusion in the argument above is based on which of the following assumptions?

(A)   Drivers in California as well as those in the rest of the United States have similar driving patterns.

(B)   The observed increases in accident rates are due almost entirely to an increase in the number of minor accidents.

(C)   Four years is not a sufficiently long period of time over which to judge the phenomenon described.

(D)   There are no other factors such as school vacations or holiday celebrations that cause accident rates to rise during these weeks.

(E)   A time change at any other time of year would not produce a similar increase in accident

答案是D，我不太懂E选项。

cheerlee

求解答TAT

maestri

这一个题目因该属于“排除他因”类。就是说，如果想要证明某一因素的作用，需要首先排除事件中有其他因素作用。

回到题目：要想证明“time change”对于accident的作用，就要保证不是其他未知/潜在的因素作用，才能够证明确实是提出的“time change”起作用。
D因此为最好选项
关于E，首先我想说“time change”在美国也就两次，变成“time saving”和变回“standard”（两种change题目都已经涵盖了）,不会再有其他"time change"的时间。
       另外，即便这一选项本身成立，他只是列出了其他类似条件下的情况，与文中所讨论的“time change”的作用没有任何关系。

cheerlee

maestri 发表于 2013-5-18 16:46
这一个题目因该属于“排除他因”类。就是说，如果想要证明某一因素的作用，需要首先排除事件中有其他因素作 ...

谢谢 ~~~~~~~