Book excerpt: 1000 questions and answers prepare you for the USMLE Step 1! The only comprehensive Q&A review for the USMLE Step directly linked to high-yield facts from Dr. Le's First Aid for the USMLE Step 1, this essential study guide offers 1000 board-style questions and answers, easy-to-navigate, high yield explanations for correct and incorrect answers, and more than 350 accompanying images. Features: 1000 board-style questions and answers -- reviewed and approved -- by students who just aced the exam Detailed explanations for both right and wrong answers - with letter options in boldface for at-a-glance review Chapters keyed to Dr. Le's First Aid for the USMLE Step1 so you can simultaneously review questions and high-yield facts 350+ high-yield images, diagrams, and tables One complete practice exam consisting of 7 blocks of 50 questions simulates the exam experience