问题
单项选择题 A1/A2型题
病例-对照研究中，能较好地回忆和确定病因因素的病例应首选（）。
A.现患病例
B.新发病例
C.死亡病例
D.重病例
E.轻病例
答案
参考答案：B
解析：病例-对照研究中，选择新发病例作为对照，可以减少回忆偏倚。
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病例-对照研究中，能较好地回忆和确定病因因素的病例应首选（）。
A.现患病例
B.新发病例
C.死亡病例
D.重病例
E.轻病例
参考答案：B
解析：病例-对照研究中，选择新发病例作为对照，可以减少回忆偏倚。
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| When I moved into an empty dorm (宿舍) for the first time two years ago, I was certain of a few things. Firstly, I realized that I didn't 1 anybody at the school. Secondly, I knew that I wanted to work hard at my lessons and 2 something useful. And thirdly, I wanted to have a good time with my new classmates, without my parents around. The first realization frightened me in the 3 . But that 4 quickly disappeared. It was the two goals 5 became my real difficulties. I knew that it was 6 to devote enough time to both classes and social efforts at the same time. But I was determined to 7 my goals. I knew this would be a 8 , but I didn't realize how big the challenge was until classes began. I got on well with the other girls who lived in my dorm. I often chatted with them 9 of finishing my homework 10 it was due (到期的). I always finished it the next day between classes. I knew 11 wasn't good and the grades I 12 showed my lack of effort. It was pretty 13 that I needed to find some sort of balance. So I made a schedule (时间表), 14 my time up among going to classes, doing homework and relaxing. It seemed like a good idea, 15 I was only able to 16 to it for a few days. A schedule like that was too much pressure. So I tried another 17 . Each week I made a list of things I had to get done during that week. Then I made a list of things I could do 18 I had time. This is the method I have used 19 then. I'm glad that I've learned to balance things and it has helped 20 me for what is come after graduation. | ||||
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