作者：英吉
In some species of cricket, the number of chirps per minute used by the male for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve as an approximate thermometer.
(A) for attracting females rise and fall in accordance with the surrounding temperature, and they can in fact serve
(B) for attracting females rises and falls in accordance with the surrounding temperature, which can in fact serve
(C) in attracting females rise and fall in accordance with the surrounding temperature, in fact possibly serving
(D) to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve
(E) to attract females rises and falls in accordance with the surrounding temperature, in fact possibly serving
原文意思：一个东西的数量是根据周围的温度决定的，而这个东西的数量是作为一个 thermometer。
题目分析：原文有一个并列关系，就是这个东西的数量怎么样了并且怎么样了。A在and后面用they，但是语义上they应该指number，可是they是复数，指代不了number，A干掉。B which指代应该是前面的temperature（如果指前面的主语number根本没必要用，which，顺着说下来就可以，只有serve的发起者和前面动词发起者不一样的时候才有必要加这个which），但是which如果指代temperature语义就不对了，应该是number作为 thermometer而不是温度。干掉。C 用in 是在某方面的意思，而那个number的升高和降低不是在吸引雌性这个方面的意思而是为了吸引雌性的意思，in的意思不对，干掉（后面那个serving发起者应该是number，在这个地方语义是正确的，所以我没有关注）。D用to attract表示目的并且用and it，it由于用了and显然于前面number保持一致，在语义上it指代number也没有什么错误，这个选项保留。E用serving，所犯的错误于C类似，干掉（如果后面的选项所犯错误与前面几个选项所犯错误类似，没有必要关注这个选项的其它地方，以最大火力攻击敌人最薄弱的地方是快速解决战斗的最好方法。）
