In some species of cricket, the number of chirps per minute used by the male to attract females rises and falls in accordance with the surrounding temperature, and it can in fact serve as an approximate thermometer.
语法 Sentence Correction-3239
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Vicky_ 2015-09-18 15:18:24
RON对代词的解释： remember that PRONOUN AMBIGUITY IS NOT AN ABSOLUTE RULE. in general, eliminating on pronoun ambiguity is not a reliable thing to do, unless the ambiguous pronoun is specifically contrasted against a SPECIFIC NOUN in other choices. for instance, if you saw a split between "it" and "that number", then you could safely choose the latter. however, you should not generally eliminate choices just because they have ambiguous pronouns. we have seen way too many correct answers with ambiguous pronouns to advise this sort of elimination anymore.
ethansue 2016-08-02 15:34:55
1） it refers to "the number of chirps per minute " 2 ) can 表示有能力；possibly表示有可能发生。两者不可替换
are 2016-05-11 14:56:44
情态动词在GMAT中是不可以被副词替代的。
停不下来的雕兄 2016-12-20 16:24:34
代词指代前面并列句中的主语可以。如果指代宾语则不太好
图法法图a 2016-12-05 13:11:18
It对应指代number
又是羊 2016-11-03 04:06:25
根据句意应该用can，而不是possibly
糯米团子QUQ 2016-10-06 14:03:02
, and it can in fact 如果and前有逗号，那么应该有it，因为是并列关系所以指代the number；如果and前没有逗号，这个it也可以没有。
ethansue 2016-09-08 10:15:58
"It can in fact serve as an approximate thermometer" is also an independent clause - it can stand alone as a sentence. Also, "it" refers to the number of chirps per minute, //mahattan gmat which is appropriately singular. I like D better here. E introduces the word "possibly" which has a different meaning than "it can serve." The "it can" means it is, really, while "possibly" means it might
danislj1227126 2016-06-26 01:51:54
it指代cricket
huiminzi1124 2016-06-15 18:37:45
考点： 1. 主谓一致 the number of chirps 所以谓语一定是第三人称单数 杀AC 2. 用to比for 更加能表达目的性 所以杀B 3.指代： V.ing 1.主句或从句主语发出的动作 2.表示一个结果 显然不是结果，但是句子的主语只有一个就是the number of chirps， chirps 的数量，那么绝逼不对 杀E 错误原因：第三点，要牢记Ving是指代什么的！！！！！！！！ 虽然Ving 比D的表达更加的简洁， 但是它是错的。简洁是要建立在语义正确的基础之上。
snow199511 2016-06-08 19:32:24
it refers to the number of chirps
kristy16s 2016-05-19 08:39:30
1）主句的主语是number,显然不能充当动词serve的发出者。（2）临近的名词是temperature，显然也不能充当serve的发出者。故只能用相对不太简洁的表述。决不能用serving表伴随
