把握了文章的三种主体结构以后，做文章后的许多题时易如反掌。以上述的“结论——解释型”文章为例，如果熟悉文章的主体结构，下面两道题就很容易找到正确答案。

1. The passage is primarily concerned with

(A) describing an important technique

(B) discussing a new method

(C) investigating a controversial procedure

(D) announcing a significant discovery

(E) promoting a novel application

正确答案对应文章首句的主题句。因此（A）为正确答案。

2. Which of the following best describes the organization of the passage?

(A) A method is criticized, and an alternative is suggested.

(B) An illustration is examined, and some errors are exposed.

(C) An assertion is made, and a procedure is outlined.

(D) A series of examples is presented, and a conclusion is drawn.

(E) A hypothesis is advanced, and supporting evidence is supplied.

本文的结构是“结论—解释型”，因此（C）为正确答案。

由此可见，把握文章的主体结构，而不陷入文章词句与细节的泥沼中，是一件快意的事情：文章读得爽，题也做得爽。