大连理工大学出版社大连理工大学出版社Culture&ArtsUNIT THREEFocus on Reading StrategySection OneReading ComprehensionSection TwoChallenging WorkSection Three大连理工大学出版社Focus on Reading StrategySection OneReading Strategy:Identifying Topic SentencesThe topic sentence is the main sentence of a paragraph.It describes its content and direction.It details the main controlling idea of the paragraph.It also sets the tone for the organization of the supporting sentences that further explain the concept established by the top
