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XXIII. Read the text and ask 5 questions on the text. Graduate EducationAmerican universities offer three main categories of graduate degrees. In mostfields of specialization, a master's degree can be earned by one or two academicyears of study beyond the bachelor's degree. A Ph.D. degree (doctor of philosophy)usually takes at least three years beyond the master's. To earn a Ph. D. in almostany field, generally a student must pass oral and written examinations in his orher specialty, produce a long research paper which makes an original contributionto his or her field of study, and pass reading examinations in one or two foreignlanguages.