Questionsare based onthe following passage.Friendship is one

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莨菪烷类生物碱有

莨菪烷类生物碱有A.苦参碱 B.麻黄碱 C.阿托品 D.小檗碱 E.汉防己甲素

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地龙中具有平喘作用的成分有

地龙中具有平喘作用的成分有A.蚯蚓解热碱 B.次黄嘌呤 C.蚯蚓素 D.琥珀酸 E.蚯蚓毒素

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Questions 22 to 25 are based on the conversation you have j

Questions 22 to 25 are based on the conversation you have just heard.A.Make an

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