近代麻醉学的发展始于（）
A.19世纪20年代
B.19世纪30年代
C.19世纪40年代
D.19世纪50年代
E.19世纪60年代
参考答案：C
根据句意，补全对话，每空一词。
(Li Ming and Kangkang are in the school library)
Li Ming: Excuse me, may I 1 a few Ren'ai Project English workbook?
Girl: Of 2 . Many students are using them, and they are doing better in English now.
(The girl looks for the books on the shelves)
Girl: Here you are.
Li Ming: Great! How long can I 3 them?
Girl: Two weeks. You must 4 them on time.
Li Ming: Sure , I will. Thank you.
Girl: It's a 5
试述工作空间设计的一般原则？
