问题
单项选择题
下列哪项是诊断急性心肌梗死最有价值的酶学指标（）
A.CK
B.AST
C.LD
D.CK-MB
E.LD同工酶
答案
参考答案：D
解析：CK-MB主要存在于心脏中，特异性高。
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下列哪项是诊断急性心肌梗死最有价值的酶学指标（）
A.CK
B.AST
C.LD
D.CK-MB
E.LD同工酶
参考答案：D
解析：CK-MB主要存在于心脏中，特异性高。
It was the last day of school and I planned to travel to my friend’s hometown. I hadn’t seen him for years and this was a good 36 to meet him again. I was busy at school so it was rather 37 when I came back home. It was already 10 o’clock at night. Time was running out. After a hurried meal I left. 38 I found a taxi very soon. Asking the driver to drive me fast to the station, I relaxed for a while, imagining what my friend looked like now. I was soon at the station and was sure that I would be able to 39 the train. Unfortunately, I fell on the way and lost some time. To my complete 40 , when I reached the platform, I saw that the train had just left! It was the last train so I had to 41 home. My mother was glad to see me back as she had a feeling about my trip. But I was unhappy. I tried to relax and went to bed but I had a 42 sleep. The next morning I was very tired. As I was having breakfast the 43 arrived. I read over the pages and was shocked to 44 that the train I missed had had an accident. How 45 I was that I missed the train!
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