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问题 选择题

柠檬烯是一种食用香料，其结构简式如下图。有关柠檬烯的分析正确的是

[ ]

A．它的一氯代物有6种

B．它的分子中所有的碳原子一定在同一平面上

C．它和丁基苯（ ）互为同分异构体

D．一定条件下，它分别可以发生加成、取代、氧化、还原等反应

答案

答案：D

单项选择题

男性，25岁，反复检查尿蛋白阳性，尿液分析以白蛋白为主，此种蛋白尿属于（）

A.组织性蛋白尿

B.溢出性蛋白尿

C.肾小管蛋白尿

D.选择性蛋白尿

E.肾小球蛋白尿
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单项选择题

One day, a poor boy who was selling goods from door to door to pay his way through school found he had only one thin dime left, and he was hungry. He decided he would ask for a meal at the next house. However, he lost his nerve when a lovely young woman opened the door. Instead of a meal he asked for a drink of water. She thought he looked hungry so she brought him a large glass of milk. He drank it slowly, and then asked, "How much do I owe you" "You don’t owe me anything," she replied. He said, "Then I thank you from my heart. ’
Years later that young woman became critically iii. The local doctors sent her to the big city, where they called in specialists to study her rare disease. Dr. Howard Kelly was called in for the consultation. When he heard the name of the town she came from, he rose immediately and ’went to her room. Dressed in his doctor’s gown he went in to see her. He recognized her at once. He went back to the consultation room determined to do his best to save her life. From that day he gave special attention to the case. After a long struggle, the battle was won.
Dr. Kelly requested the business office to pass the final bill to him for approval. He looked at it and then wrote something on the edge. The bill was sent to her room. She feared to open it, for she was sure it would take the rest of her life to pay for it all. Finally she looked, and something caught her attention on the side of the bill. She read these words: "Paid in full with one glass of milk.\

When the boy and the young woman met again years later______.

A．they had both changed beyond recognition

B．neither remembered their previous meeting

C．the boy had become a medical specialist

D．the woman had come to stay in the big city
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