问题
单项选择题
冠状动脉狭窄段直径减少9/10为（）
A.75%狭窄
B.80%狭窄
C.85%狭窄
D.90%狭窄
E.95%狭窄
答案
参考答案：D
解析：冠状动脉狭窄一般用直径表示，以狭窄段近端或远端正常血管的管径为100%，狭窄段直径减少1/2为50%狭窄，减少9/10为90%狭窄，完全闭塞为100%狭窄。
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冠状动脉狭窄段直径减少9/10为（）
A.75%狭窄
B.80%狭窄
C.85%狭窄
D.90%狭窄
E.95%狭窄
参考答案：D
解析：冠状动脉狭窄一般用直径表示，以狭窄段近端或远端正常血管的管径为100%，狭窄段直径减少1/2为50%狭窄，减少9/10为90%狭窄，完全闭塞为100%狭窄。
Adam Lee is a very popular man in Ottawa. He is not famous in sports or the arts, people in the streets know about him, especially the . For those people, he is “Gloves Lee”. How did he get that ? He looks like any other businessman, wearing a suit and carrying a briefcase (公文包). But he’s . His briefcase always has some gloves. In winter, Mr. Lee walks in the streets, looking around at people. He stops when he someone with no gloves. He gives them a pair and then he moves on, looking for more people with cold . On winter days, Mr. Lee gloves. During the rest of the year, he buys gloves. People who have heard about him him gloves, and he has many in his apartment. Mr. Lee began doing this 21 years ago. Now, many poor people in the city know him and his behavior. But people who don’t know him are sometimes surprised by him. They don’t realize that he just wants to make them happy. A pair of gloves may be a thing, but it can make a big difference in winter.
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