incorrectly by not taking the trouble to look it up. he may think that "sanguine" and "sanguinary" mean the same thing, but the difference is a bloody big one. the reader can only infer what the writer is trying to imply. 　　这一段谈的是a writer's carelessness，先给出一个general statement作为主题句，然后通过5个 "perhaps"加以例证。 　　c. 由特殊到一般排列（specific-to-general arrangement） 　　i do not understand why people confuse my siamese cat, prissy, with the one i had several years ago, henry. the two cats are only alike in breed. prissy, a quiet, feminine feline, loves me dearly but not possessively. she likes to keep her distance from people, exert her independence and is never so rude as to beg, lick, or sniff unceremoniously. her usual posture is sitting upright, eyes closed, perfectly still. prissy is a very proper cat. henry, on the other hand, loved me dearly but possessively. he was my shadow from morning till night. he expected me to constantly entertain him. henry never cared who saw him do anything, whether it was decorous or not, and he usually offended my friends in some way. the cat made himself quite comfortable, on the top of the television, across stranger's feet or laps, in beds, drawers, sacks, closets, or nooks. the difference between them is imperceptible to strangers. 　　本段的主题句是段首句，它仅提出一个问题：为什么两只猫会被搞混。然后对两者进行比较，末句才下结论。 　　2）、形连 　　行文的逻辑性常常要靠适当的转换词语及其他手段来实现。请读下面这一段文字并找出文中用以承上启下的词语： 　　walter's goal in life was to become a successful surgeon. first, though, he had to get through high school, so he concentrated all his efforts on his studies —— in particular, biology, chemistry, and math. because he worked constantly on these subjects, walter became proficient in them; however, walter forgot that he needed to master other subjects besides those he