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【多选题】
下列哪些性质与吗啡相符A.
具有部分氢化菲环的
B.
具有五个手性碳原子,呈左旋体
C.
易发生还原反应,失去活性
D.
由阿片中提取得到
E.
易发生氧化反应,颜色变深,生成毒性较大的双吗啡
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【简答题】I think that (1) the main points I (2) to tell you about...thank you for (3) me talk about the Storo System. So...now...I'd like to (4) you to me about the (5) that you have... to suggest any (6) qu...
【单选题】Where does the CO 2 in our blood come from?
A.
From the air we breathe in
B.
From bacteria inside our body
C.
From our body's cells
D.
From drinking cola (可乐)
【单选题】—_____? —She's our history teacher.
A.
Where is she from
B.
Where does the woman work
C.
Who is she
D.
How is the woman
【单选题】Miss Green didn't tell us _______ before she came to our school. [ ]
A.
where does she live
B.
where she lived
C.
where she lives
D.
which she lives in
【判断题】A student can gain good diction by wide and careful reading and by consulting dictionaries. When in doubt about the meaning and use of a word, or about the differences between related words, he should...
A.
正确
B.
错误
【判断题】If you are not clear about a young lady’s marital status, it is polite to call her “Miss”.
A.
正确
B.
错误
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