GRE reading comprehension is unlike any
other reading you do. Therefore, you should
not approach it in the way you approach other reading.
ETS passages are poorly written, but not
on purpose. Don't look for hidden meanings
in the grammatical and stylistic errors.
Forget about "comprehension."
On the GRE, you read for one reason only: to earn
points. If you can accept this fact, you'll be far, far ahead. Don't even try to read the
whole passage, just get an idea what each paragraph is about and what the main idea
of the whole passage is. Don't get bogged down in useless details that may not even be
considered in the questions.
Outline the passage:
Read the first sentence and last sentence of each paragraph.
On your scrap paper, jot down a few notes for each paragraph, then write down
the
main idea. This is what we call outlining. Be sure to number the paragraphs in your
notes. For example:
"1st paragraph: greenhouse gases and greenhouse
effect introduced"
"2nd paragraph: greenhouse gases affected by
humans, and CFC/ozone example"
"3rd paragraph: 2 possible results of greenhouse
effect"