作者：本质教育 李泽宇

Official Guide是每一个考GMAT的学生必须具备的书籍。里面的每一道题目最好做2遍以上（尤其是错题，一定要好好分析体会）。很多同学告诉我，OG的答案不够清楚。事实上，OG的有些讲解试图绕开一些需要补充的知识，例如什么是溯因推理，分词的用法等等，因此往往显得不够清晰。因此，我想我每天抽出一些时间，写一道OG的题目，帮助大家学习。

5. As with ants, the elaborate social structure of termites includes a few individuals reproducing and the rest serve the colony by tending juveniles, gathering food, building the nest, or battling intruders.
A. As with ants, the elaborate social structure of termites includes a few individuals reproducing
B. As do ants, termites have an elaborate social structure, which includes a few individuals to reproduce
C. Just as with ants, termite social structure is elaborate, including a few individuals for reproducing
D. Like ants, termites have an elaborate social structure in which a few individuals reproduce
E. Like that of ants, the termite social structure is elaborate, including a few individuals that reproduce

As/like/unlike是GMAT常考的一组词，如果你之前不熟悉，从今天开始，你看到他们就用该pay attention，就像条件反射一般：

Like/unlike A, B ….

As A does, B….

(1) 首先，like/unlike是介词，后面跟名词（短语），而as表达“像”这个意思只能是连词(conjunction)因此后面必须有一个助动词。

(2) A,B两者要有可比性。

(3) Just like/just as都是redundant – 像就是像，“就像”重复啰嗦

因此A,C缺乏助动词，排除

比较B,D，差别在定语从句：

B：……structure, which includes a few individuals to reproduce and the rest serve

注意到连词and引导平行对称结构，D前后不对称：后面需要定语从句而不是一句话

而D没有这个问题：

D: structure in which a few individuals reproduce and the rest serve…

划线的两个部分对称，并列起来共同在in which引导的定语从句中起句法作用 （也可以看做…and in which the rest serve…不过in which重复因此省略）

同样的理由可以排除E.

因此答案是D.