Unit 3 Using Language课件:(人教版)选修8
Unit 3 Using Language课件:(人教版)选修8第5页

9. practical I. (of people) guiltless; (of people) simple; not able to recognize evil; (of thing ) harmless 10. extension J. full of producing power and activity; continuously moving or changing; of a force or power producing movement 11. competence K. to hit sb. / sth. quickly and lightly