First of all,I am not a NN,here's my understanding of this question,of course it's only for your information. For B and C,it's very easy to identiy that they are both wrong options because the condition had made it very clear that the number of days with either light rainfall or moderate rainfall are fewer for 1990 than for 1910,so combined together,it's easdy to conclude that the number of days with some rainfull are still fewer in 1990 than 1910. E的话,因为雨的总量是1990更大,而且天数是相同的,所以平均数肯定是1990大. D的话,因为moderate的标志是1到2之间,而且1990年的moderate天数比1910的又要少,所以1990再怎么样也不可能是1910的两倍多.(随便套一下就可以推出) A的话还是有可能的,注意题目是问is it possible?因为有一种情况就是1990的下heavy rain的天数很少,但是rainfall都很大,然后1910虽然天数比较多,但是rainfal都只比2多一点点,所以总量上还是1990大. 解释了这么多,不好意思,希望能帮助到你,同时帮我考前攒攒RP |