2022 Tianjin Question 49 Single-choice Differentiating 2022_天津卷 (英语) 49. What is the author’s purpose in writing the passage? A. To promote a new technology.B. To recommend a research team.C. To introduce a scientific discovery.D. To explain a historical phenomenon. Answer keyC ☆ SaveCan't do it, show the explanation查看原卷 →