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题库 / GMATLA-CR-106
In Patton City, days are categorized as having heavy rainfall (more than two inches), moderate rainfall (more than one inch, but no more than two inches), light rainfall (at least a trace, but no more than one inch), or no rainfall. In 1990, there were fewer days with light rainfall than in 1910 and fewer with moderate rainfall, yet total rainfall for the year was 20 percent higher in 1990 than in 1910.
If the statements above are true, then it is also possible that in Patton City
the number of days with heavy rainfall was lower in 1990 than in 1910.
the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910.
the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910.
the total number of inches of rain that fell on days with moderate rainfall in 1990 was more than twice what it had been in 1910.
the average amount of rainfall per month was lower in 1990 than in 1910.
题目说的是possible, 不是must be true
D：假设1990年的中雨的降水量全都是达到极限值2 inches，1910年中雨的降水量全都达到极限值1 inche，那么D的意思就是2*1990年天数>2*1*1910年天数，但是题目说的是1990年的天数是小于1910年的天数的，所以肯定不成立
A：大雨的日子更少，但是大雨的降水量可能是巨多的，因此possible
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