非常不理解为什么给的答案不是一个说明差异的<- ->，而是一个方向非常不明确的=>

GWD-2-Q12:

Which of the following most logically completes the argument?

Yorco and Zortech are two corporations that employ large numbers of full-time workers who are paid by the hour.  Publicly available records indicate that Yorco employs roughly the same number of such hourly wage workers as Zortech does but spends a far higher total sum per year on wages for such workers.  Therefore, hourly wages must be higher, on average, at Yorco than at Zortech, since _____.

按时付工资

Y和Z的工人数一样（扔）

Y比Z负的总工资数多。

结论，Y的每小时工资多。

1. Zortech spends a higher total sum per year than Yorco does to provide its hourly wage workers with benefits other than wages

2. the work performed by hourly wage workers at Zortech does not require a significantly higher level of skill than the work performed by hourly wage workers at Yorco does

3. the proportion of all company employees who are hourly wage workers is significantly greater at Yorco than it is at Zortech

4. overtime work, which is paid at a substantially higher rate than work done during the regular work week, is rare at both Yorco and Zortech

5. the highest hourly wages paid at Yorco are higher than the highest hourly wages paid at Zortech

答案d

题文中说YZ工人数差不多，都按小时付工资。总工资Y多，并不能推出Y支付的小时工资比Z多。因为可能Y支付的小时工资少，但Y加班很多，这样也可以推出Y总工资多。

D说两家公司都很少加班。这样结合题文给出的条件可以推出Y的小时工资更多。

大家讨论下。

对这种需要列公式的题特别不感冒

而且对D取非，两个都发生变化，即特别高的加班费经常同事发生在两个公司，怎么就不成立了呢？

总工资=工人数*每个人工作小时数*每小时工资数

Y的总工资大于Z的总工资 工人数又等于Z的工人数 现在要保证的就是Y的 每个人工作小时数小于等于Z的每个人工作小时数  对D取非 则不能保证这个条件

不好意思  这个题目我说错了

因为这是一个填空题  不是一个假设题 

所以思路不一样  我们可以这么想 当D成立的时候  可以保证 Y的每个人工作小时数小于等于Z的每个人工作小时数   这样D作为原因的话 可以很好的衔接题目最后的那个since

是的。

题目的前半句给出了条件之一，填空的部分需要填入条件之二，D填入才可成立。