NON-FICTION January Reading Comprehension #21 - THE GREAT RACE OF MERCY is a short reading comprehension passage to help boost literacy skills. It offers 4 reading comprehension questions that students will type out for practice. This passage has facts and four typing questions about the Great Race of Mercy. This is the time a team of sled dogs, led by Balto, had to save a small town in Alaska by delivering medicine to prevent a total outbreak of diphtheria.