According to GMAC – each RC passage is a unified whole – that is, the individual sentences and paragraphs support and develop one main idea or central point which the student must identify.
You must first read the first sentence carefully, maybe twice, because that is the Summary or the Topic of the RC.
Write the heading of the RC on your scratch pad so that you are in sync with what is happening in the passage.
When reading understand the souce of the passage. Since it is a GMAC passage, the source is generally a very reliable magazine, book, or article. Knowing that, the passage will never be biased, and instead would try to take a neutral stance on the subject. If any of the answer choices state a very extreme or eccentric idea, you know that it wouldn't be right, except especially for the questions that come with an "except". Also, when there is a reference of the author in the answer choices, never choose an answer that condemns the author.
Another thing that you need to keep in mind is the tone of the passage. The tone can either be positive - the author likes the idea, negative - the author does not suport the ideas, or descriptive - the author is merely trying to describe some events. For every paragraph make a symobol on your scratch pad to mark the tone of the passage.
Positive > +
Negative > -
Descriptive > ~ or =
Note: There could be more than one tone in a paragraph, and you need to mark both tones while noting the tones.
After marking the tone, write down what the author majorly talked about in the paragraph, it could be two words, such as, decribing partition, or more than two words, but whatever you choose to write, you should be able to remember what the author talked about in the paragraph.
An added advice, wherever there is a list, draw a list near the tone and passage gist. This will help you get back to the list when a question arises.