The series is organized into three levels of difficulty and offers a minimum of 400 vocabulary terms and phrases. Incorporating career-specific vocabulary and contexts, each unit offers step-by-step instruction that immerses students in the four key language components: reading, listening, speaking and writing. Career Paths: Petroleum I addresses topics including jobs in the industry, types of oil rigs, petroleum mapping, oil rig mechanical systems and the drilling process. Included Features A variety of realistic reading passages Career-specific dialogues 45 reading and listening comprehension checks Over 400 vocabulary terms and phrases ... Every unit includes a test of reading comprehension, vocabulary and listening skills and leads students through written and oral production. Career Paths: Petroleum I is a new educational resource for petroleum industry professionals who want to improve their English communication in a work environment.