An annotation is simply a summary of a book, article, or some other written source. A bibliography is a list of sources on a particular topic. Put together, an annotated bibliography is a list of sources on a topic that offers a summary for each source.
The computer-delivered GREÂ® General Test takes about 3 hours and 45 minutes and consists of three separately timed sections: 1  Verbal Reasoning â There are two 30-minute sections, each containing 20 questions.  Quantitative Reasoning â There are two 35-minute sections, each containing 20 questions.
In addition to the General Test, there are also seven GRE Subject Tests testing knowledge in the specific areas of Biochemistry, Cell and Molecular Biology; Biology; Chemistry; Literature in English; Mathematics; Physics; and Psychology. The length of each exam is 170 minutes.