14. Which of the following, if true, best completes the argument below?>>
Comparisons of the average standards of living of the citizens of two countries should reflect the citizens’ comparative access to goods and services. Reliable figures in a country’s own currency for the average income of its citizens are easily obtained. But it is difficult to get an accurate comparison of average standards of living from these figures, because______>>
(A) there are usually no figures comparing how much of two different currencies must be spent in order to purchase a given quantity of goods and services>>
(B) wage levels for the same job vary greatly from country to country, depending on cultural as well as on purely economic factors>>
(C) these figures must be calculated by dividing the gross national product of a country by the size of its population>>
(D) comparative access to goods and services is only one of several factors relevant in determining quality of life
(E) the wealth, and hence the standard of living, of a country’s citizens is very closely related to their income
题中说了3个事，我简写为，standard of living, access of goods and services, average income。其中standard of living反映accsss of goods。题目说，average income可以准确得到，但这个数据却不能推出standard of living的水平。问为什么。答案是A,说是average income 不能推出access of goods and services。我觉得不妥。
我觉得，这道题里面有2个gap。standard of living & access of goods and services 和 access of goods and services & average income。答案A是说明了第二个gap,如果A正确，除非access of goods and services能够推出standard of living的水平。但是题目中说的是standard of living REFLECTS access of goods and services, 而不是access of goods and services CAN REFLECT standard of living。简单的说就是，A能够反映B的变化，那么B一定就能反映A的变化吗？这是不一定的。而且，如果只因为A填补了一个GAP就选它，也是不行的。应为题目问的是不能推出standard of living的原因。所以我觉得A不对。
D可能更好一些。它指出了第一个GAP，而正是这个GAP和题目问的问题最接近。且，不论access of goods and services和average income的关系如何，只要D放在那，都不能回答原文的问题。
我不是说D就是答案，但是D显然比A好。
请指教。 | 
