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26. Of all the possible disasters that threaten American agriculture, the possibility of an adverse change in climate is maybe the more difficult for analysis.
A. is maybe the more difficult for analysis
B. is probably the most difficult to analyze
C. is maybe the most difficult for analysis
D. is probably the more difficult to analyze
E. is, it may be, the analysis that is most difficult 
 
绝对错误比较结构：（一级排除 A,D）
 表示比较对象一个是另外一个的全子集的时候，用最高级比较形式
1．  简洁(一级排除  E )
when inserted into the sentence, produces an illogical structure: the possibility ... is... the analysis that.
2．  平行结构：一级排除 C）
A is B  B 可以为不定式和 名词A对应。
difficult should be completed by the infinitive to analyze.
an infinitive,  to analyze, functions as a noun equivalent
可以说: To analyze is difficult. 但是不能说For analysis is difficult. 
 
词法：（二级排除 C ）
probably / maybe ，probably 对应概率， maybe表示能够。         
(maybe是个口语表达，书面语应该用probably)=è其实这个说法好牵强
真正的理由是: possibility表示概率, 那么就要用probably, 表示概率的词语, 来对应
maybe/can/could都是能够, 不是概率