Q14:

Political Advertisement:

Mayor Delmont’s critics complain about the jobs that were lost in the city under Delmont’s leadership. Yet the fact is that not only were more jobs created than were eliminated, but the average pay for these new jobs has been higher than the average pay for jobs citywide every year since Delmont took office. So there can be no question that throughout Delmont’s tenure the average paycheck in this city has been getting steadily bigger.

Which of the following, if true, most strengthens the argument in the advertisement?

1. The average pay for jobs created in the city during the past three years was higher than the average pay for jobs created in the city earlier in Mayor Delmont’s tenure.
   
2. Average pay in the city was at a ten-year low when Mayor Delmont took office.
   
3. Some of the jobs created in the city during Mayor Delmont’s tenure have in the meantime been eliminated again.
   
4. The average pay for jobs eliminated in the city during Mayor Delmont’s tenure has been roughly equal every year to the average pay for jobs citywide.
   
5. The average pay for jobs in the city is currently higher than it is for jobs in the suburbs surrounding the city.

参考答案是C，C不正是起削弱的作用吗？

选d 居民收入增长数=新增工作数乘以工资-减少的工作乘以其工资 所以减少的工作的工资有决定作用。

申明不是牛牛拉，这个公式看清楚：正解

居民收入增长数=新增工作数乘以工资-减少的工作乘以其工资 所以减少的工作的工资有决定作用

但是居民收入上涨一定能说明平均工资上升吗

我这样理解：总工资/总工作数为原本的平均工资，现在的平均工资为

总工资+居民收入增长数/（总工作数+新增工作数-减少的工作数）

所以单从式子来看，必须使居民收入增长数足够大，或者工作数的上涨较小，要么就是两者间一定比例，使后者大于前者，但文中对这个是模糊处理的

所一一个理解，average paycheck分母上是人数，则可确定，因为city的人数不变，而居民收入却是上涨的，那么人头平均工资数自然上升，欢迎讨论