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introduction to important reading strategies and skillsunit 1 learning  text a learning and the brain  text b teenage brainsunit 2 employer and employee satisfaction  text a telecommuting  text b stupid jobs are good to relax withunit 3 social problems.  text a workplace violence is a source of and reaction to stress  text b to arm or not to armunit 4 strategies  text a language learning strategies  text b how to make math class interesting?unit 5 traffic and transportation  text a seat belt usage  text b smarter cities programunit 6 national and international politics  text a politics of australia  text b political apologiesunit 7 new technologies  text a new technologies create new problems  text b how to use your laptop to locate an earthquakeunit 8 competition  text a knowledge-based competition  text b why competition is goodunit 9 energy  text a energy sources and uses  text b what breakthroughs do biofuels need?unit 10 health  text a should dentists offer health screenings?  text b five ways to keep your fitness resolutions aliveunit 11 forest and nature  text a dry, hot and windy  text b drug trafficking poses surprising threats to rain forestsunit 12 ecosystem  text a can ecosystems be eestored?  text b warmer, werrwe and betterunit 13 deserts  text a deserts  text b saharaunit 14 tourist attractions  text a grand canyon national park  text b athens city break guideunit 15 matters of public concern  text a privacy, neither absolute nor highly valued  text b reasons for extramarital affairsunit 16 invention  text a about crittercam  text b steven jobsunit 17 environment  text a european youth face environmental hazards  text b what killed the great beasts of north america?unit 18 living species  text a warming to extinction  text b the secret of dolphins' speed is not skin-deepanswer key