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【简答题】
筛选是根据药物与杂质的什么不同来分离药物中的杂质（ ）
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参考解析：
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皮皮学刷刷变学霸
举一反三
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【单选题】听力原文：M: Hello. I need to talk with someone about my driver's license. W: Yes. How may I help you? Do you have a driver's license, or do you need to get one? M: Well, I'm not sure. You see, I have an i...
A.
The man wants to obtain an international driver's license that be can use both in the U.S. and in his country.
B.
The man wants to take a driver's test to get an Arizona driver's license.
C.
The man wants to know whether he can use his international driver's license in Arizona.
D.
The man wants to fill out an application for an Arizona driver's license.
【单选题】听力原文：M: Hello. I need to talk with someone about my driver's license. W: Yes. How may I help you? Do you have a driver's license, or do you need to get one? M: Well, I'm not sure. (19)You see, I have ...
A.
The man wants to obtain an international driver's license that he can use both in the U.S. and in his country.
B.
The man wants to take a driver's test to get an Arizona driver's license.
C.
The man wants to know whether he can use his international driver's license in Arizona.
D.
The man wants to fill out an application for an Arizona driver's license.
【单选题】听力原文：M: Hello. I need to talk with someone about my driver's license. W: Yes. How may I help you? Do you have a driver's license, or do you need to get one? M: Well, I'm not sure. You see, I have an i...
A.
The man wants to obtain an international driver's license that he can use both in the U.S, and in his country.
B.
The man wants to take a driver's test to get an Arizona driver's license.
C.
The man wants to know whether he can use his international driver's license in Arizona.
D.
The man wants to fill out an application for an Arizona driver's license.
【单选题】听力原文：M: Hello. I need to talk with someone about my driver's license. W: Yes. How may I help you? Do you have a driver's license, or do you need to get one? M: Well, I'm not sure. You see, I have an i...
A.
The man wants to obtain an international driver's license that he can use both in the U.S. and in his country.
B.
The man wants to take a driver's test to get an Arizona driver's license.
C.
The man wants to know whether he can use his international driver's license in Arizona.
D.
The man wants to fill out an application for an Arizona driver's license.
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