Unit 9 Part A______ ______ ______ ______ ______ ______ ______ ______ ______ ______
举一反三
- 本周要学习的单元是？ A: Unit 6 B: Unit 7 C: Unit 8 D: Unit 9
- Pulmonary alveoli are the main part of lung gas exchange and the functional unit of lung.
- m________：a unit that can form part of a course of study, especially at a college or university in Britain
- actor ( ) A: a person who acts a part in a play, a movie, or a radio or television program. B: position in height, stage, or rank. C: (informal) to believe or conclude. D: one part or unit of each hundred.
- Please summarize the meaning of Part IV. (Para. 9)