GWD 里面的题目求助 ~~

cjy861990

The average hourly wage of television assemblers in Vernland has long been significantly lower than that in neighboring Borodia.Since Borodia dropped all tariffs on Vernlandian televisions three years ago, the number of televisions sold annually in Borodia has not changed.However, recent statistics show a droip in the number of television assemblers in Borodia.Therefore, updated trade statistics will probably indicate that the number of televisions Borodia imports annually from Vernland has increased.


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

1. The number of television assemblers in Vernland has increased by at least as much as the number of television assemblers in Borodia has decreased.
   
2. Televisions assembled in Vernland have features that televisions assembled in Borodia do not have.
   
3. The average number of hours it takes a Borodian television assembler to assemble a television has not decreased significantly during the past three years.
   
4. The number of televisions assembled annually in Vernland has increased significantly during the past three years.
   
5. The difference between the hourly wage of television assemblers in Vernland and the hourly wage of television assemblers in Borodia is likely to decrease in the next few years.
   这道题答案说选C我选的A但是怎么感觉哪个答案都和题目没多大关系啊 求解释 在线等!
   

sdcar2010

Premise: Televisions are made in both V and B, and B imports TV from V.  The number of televisions sold in B keeps constant.  These TV's come from both B and V. the number of TV assemblers in B decreases.

Conclusion: TV imports from V to B has increased.

The assumption is that if TV assemblers in B are fewer, there will be fewer TV made in B.  A further assumption is that the efficiency of TV assemblers in B has not changed (answer C).

If you use negation method, you would find that after negating C, the argument falls apart. If assemblers in B become more efficient, they can produce the same amount or more TV than before, even with a lower number of total assemblers.

dengqing2007

有理。