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标题: 下大雨的天和下小雨的天 [打印本页]
作者: univonly    时间: 2007-5-19 23:25
标题: 下大雨的天和下小雨的天

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

 

  1. the number of days with heavy rainfall was lower in 1990 than in 1910

  2. the number of days with some rainfall, but no more than two inches, was the same in 1990 as in 1910
  3. the number of days with some rainfall, but no more than two inches, was higher in 1990 than in 1910
  4. 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
  5. the average amount of rainfall per month was lower in 1990 than in 1910

 

明明要下大雨来补偿少掉的小雨天。感觉没有答案的说。可是答案说选A。不要嫌我蠢阿，亲们。。。

现在到了比较着急的时候了

作者: zhangyonguc    时间: 2007-5-20 00:24

题目问的是possible, 不是MUST， 所以1990年的大雨天可能是比1910年少。 因为可以单天降雨量远远大于1910年的。

第一次发贴，别见笑。





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