求助 求助GWD29关于一个降水量的问题

5 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

答案是A

完全不明白````希望NN们帮解释解释

我逻辑本来就差 GWD里还有很多我读不懂的题 很郁闷 希望大家能帮帮忙 万分感谢了

3
    Industrial accidents are more common when some of the people in safety-sensitive jobs have drinking problems than when none do.  Since, even after treatment, people who have had drinking problems are somewhat more likely than other people to have drinking problems in the future, any employer trying to reduce the risk of accidents should bar anyone who has ever been treated for a drinking problem from holding a safety-sensitive job.
     

Which of the following, if true, most seriously undermines the argument above?

1. Some companies place employees who are being treated for drinking problems in residential programs and allow them several weeks of paid sick leave.
     
2. Many accidents in the workplace are the result of errors by employees who do not hold safety-sensitive jobs.
     
3. Workers who would permanently lose their jobs if they sought treatment for a drinking problem try instead to conceal their problem and continue working for as long as possible.
     
4. People who hold safety-sensitive jobs are subject to stresses that can exacerbate any personal problems they may have, including drinking problems.

E  Some industrial accidents are caused by equipment failure rather than by employee error.
     

答案是C

不明白
    不明白吖```请大家帮忙翻译和讲解一下

非常非常感谢

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