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【简答题】
半数致死量LD50
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参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【多选题】硝苯地平的鉴别方法有
A.
水解反应
B.
沉淀反应
C.
红外分光光度法
D.
取待测品约25mg，加丙酮1ml溶解，加20%氢氧化钠溶液3～5滴，振摇，溶液显橙红色
E.
照紫外—可见分光光度法测定，在237nm的波长处有最大吸收，在320~355nm的波长处有较大的宽幅吸收
【多选题】硝苯地平的鉴别方法有
A.
水解反应
B.
沉淀反应
C.
红外分光光度法
D.
取待测品约25mg，加丙酮1ml溶解，加20%氢氧化钠溶液3～5滴，振摇，溶液显橙红色
E.
照紫外一可见分光光度法测定，在237nm的波长处有最大吸收，在320～355nm的波长处有较大的宽幅吸收
【单选题】What's your plan for tomorrow?
A.
Yes, I like it.
B.
I want to cycle around the city.
C.
I went to Beijing yesterday
D.
I have been to Beijing twice.
【单选题】Woman: What's your plan for the winter holiday? Man: I'm going skiing in Colorado. Woman: But it's very dangerous for a beginner. Do your parents agree? Man: No, but I can get round them. Question: Ho...
A.
He will persuade his parents.
B.
He will lie to his parents.
C.
He will go without his parents' permission.
D.
He will go somewhere else before going skiing.
【单选题】听力原文：W：What's your plan for the summer holiday? M：I'm going to Australia. Q：What's the woman going to do for the summer holiday? (7)
A.
Travel to Australia.
B.
Start a business.
C.
Work part-time,
D.
Write a report.
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