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【单选题】
关于盐酸利多卡因的性质和作用包括A.
对酸或碱较稳定，不易发生水解反应
B.
可发生重氮化一偶合反应
C.
水溶液加氢氧化钠试液可析出白色沉淀
D.
比普鲁卡因作用时效长，但强度弱
E.
与吡啶硫酸铜试液作用产生紫堇色络合物
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举一反三
【简答题】Some students learn better by reading. Others learn more from listening to a teacher. Which way of learning is better for you, and why? Include details and examples to support your explanation.
【简答题】阅读理解 Students learn their lessons in class. In class teachers teach them. Students sit in the classroom listening to the teacher. This is a way of learning. Is this the only way for students to learn?...
【单选题】When students learn 'apple， orange'， the teacher gives students another word 'fruit'.Which principle doe， s the teacher follow in his/her vocabulary teaching?
A.
Word-choice principle.
B.
Presentation principle.
C.
Culture principle.
D.
Systematic principle.
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