Unit 3 A healthy diet同步练习一、选出所给单词不同类的选项,将序号填在题前括号内。( ) 1. A. doctor B. sister C. teacher D. cook( ) 2. A. eggB. milk C. diet D. bread( ) 3. A. breakfast B. lunch C. dinner D. meat( ) 4. A. never B. sometime C. always D. usually( ) 5. A. sweetB. food C...