Gershwin dropped out of school at age 15 and earned a living by making piano rolls for player pianos and by playing in New York nightclubs. His most important job in this period was his work as a song plugger, who promoted interest in the sheet music of popular songs by playing and singing those songs in stores. | Chapter 3 Developing Reading Comprehension Skills 103 SUMMING IT UP The reading passages progress from relatively simple to relatively difficult. You may need to refer back to the passage to know exactly what is said about the subject of the question. Inference questions are designed to measure whether you comprehend an argument or idea that is implied but not stated in the passage. It is important to be able to recognize and understand signal words or connectives which introduce connect order and relate individual ideas to more general concepts. PART IV TWO PRACTICE TESTS et Practice Test 2 Practice Test