问题 单项选择题

硫酸阿托品中的莨菪碱

A.配制成50mg/ml的溶液,测定旋光度,不得过-0.4°
B.配制成2.0mg/ml的溶液,在310nm处测定,吸收度不得大于0.05
C.供试品溶液加稀盐酸5ml与三氯化铁试液2滴,不得显红色
D.供试品溶液加硝酸与水混合液,除黄色外不得显红色或淡红棕色
E.薄层色谱法

答案

参考答案:A

解析:120~123.生物碱类药物中对应杂质检查方法。

阅读理解

阅读理解。

    Mr. and Mrs. Harris had always spent their summer holidays in a small hotel at the seaside near their

hometown. One year, however, Mr. Harris made a lot of money in his factory, so they decided to go to

a foreign country and stay at a really good hotel.

   They flew to Paris, and arrived at a 5-star hotel late in the evening. They thought they would have to

go to bed hungry, because in that small hotel where they used to stay in the past, no meals were served

after seven in the evening. They were surprised to be told that the hotel served dinner until ten.

    "Then what are the times of meals?" asked Mrs. Harris.

    "Well, Madam, we serve breakfast from seven to eleven, lunch from twelve to three, tea from four to

five, and dinner from six to ten."

    "But that hardly leaves any time for us to see the city!" said Mrs. Harris.

1. Why did Mr. and Mrs. Harris think they would have to go to bed hungry when they arrived at the hotel? [ ]

A. Because it's a 5-star hotel.

B. Because they thought no meals would be served late in the evening.

C. Because they were very tired after the trip.

D. Because they didn't want to eat anything.

2. How long did the service time for lunch last in the hotel? [ ]

A. 2 hours.

B. 4 hours.

C. 3 hours.

D. 1 hour.

3. What did Mrs. Harris think of the times of the meals in the hotel? [ ]

A. She thought they would have enough time to see the city.

B. She thought they would have to spend too much time on meals instead of travelling.

C. She thought they would have enough time to have meals.

D. She thought the times were suitable and felt very satisfied.

单项选择题