GWD一道逻辑 thx~

danielgc

38: GWD-29-Q35
In Patton City, days arecategorized as having heavy rainfall (more than two inches), moderate rainfall(more than one inch, but no more than two inches), light rainfall (at least atrace, but no more than one inch), or no rainfall.  In 1990, there were fewer days with lightrainfall than in 1910 and fewer with moderate rainfall, yet total rainfall forthe year was 20 percent higher in 1990 than in 1910.
If the statements aboveare true, then it is also possible that in Patton City
A.     the number of days with heavy rainfall was lower in 1990than in 1910
B.     the number of days with some rainfall, but no more than twoinches, was the same in 1990 as in 1910
C.     the number of days with some rainfall, but no more than twoinches, was higher in 1990 than in 1910
D.     the total number of inches of rain that fell on days withmoderate rainfall in 1990 was more than twice what it had been in 1910
E.      the average amount of rainfall per month was lower in 1990than in 1910
怎么会选A啊，明明M,L都减少了，总量上升。 H怎么可能还回更少呢？求解~~

soubixl

注意是问 it is also possible that  也就是说选一个有可能发生的情况。注意天数与雨量，不要忽略了每次下的雨量。
总雨量=天数*平均雨量
A之所以有可能是因为有可能在1990年下大雨的总量>1910的。

starry1008

举个极端例子  1990年 某一天下了场特大暴雨 一天的雨量就等于1990全部高雨量日的总和了

danielgc

谢谢楼上2位。雨量这个事情我知道是这个题的point所在。错因的确是it is also possible的原因，当成assumption来做了，惯性思维找logical gap了