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【多选题】
[110-113]A.
秋水仙碱
B.
小檗碱
C.
氧化苦参碱
D.
吗啡
E.
麻黄碱 110.可用水蒸气蒸馏分离的生物碱是 111. 2%醋酸浸渍，不能溶解的生物碱是 112.醋酸水溶液用氢氧化钠碱化至pH9，用氯仿萃取，萃至氯仿层的生物碱是 113.氢氧化钠碱水溶液加HC1调至pH2-3，加饱合NaC1溶液放置，沉淀的生物碱是
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举一反三
【单选题】Which of the following activities activities does not involve writing？
A.
Completion according to outlines.
B.
Completion with multiple choices.
C.
Completion according to topic sentences.
D.
Completion according to the brainstormin
【多选题】Which of the following are communicative activities?
A.
Problem-solving activities.
B.
Dialogues.
C.
Information-gap activities.
D.
Role-plays.
E.
Debates
【单选题】Which of the following activities are not communicative activities in teaching speaking?
A.
Information gap activities.
B.
Accuracy-focused games.
C.
Debates and interviews.
D.
Problem-solving activities.
【多选题】Which of the following are included in communicative activities?
A.
information gap activities
B.
problem-solving activities
C.
discussions and debates
D.
interviews and fluency-focused games
【单选题】Which of the following activities was the responsibility of the federal government in the nineteenth century?
A.
Controlling of the manufacture of gunpowder.
B.
Determining the conditions under which individuals worked.
C.
Regulation of the supply of money.
D.
Inspection of new homes built on western lands.
【简答题】Which of the following belong to logistics activities?（ ）
【单选题】Which of the following activities does not belong to communicative activities?( )
A.
Role play.
B.
Pattern drills.
C.
Information gap.
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