问题
单项选择题 A1型题
在病例对照研究中,估计某因素与疾病的联系程度,应计算()
A.RR
B.RR-1
C.OR
D.OR-1
E.P1-PO
答案
参考答案:C
在病例对照研究中,估计某因素与疾病的联系程度,应计算()
A.RR
B.RR-1
C.OR
D.OR-1
E.P1-PO
参考答案:C
、阅读短文,根据短文内容,从短文后的五个选项中选出能填入空白处的最佳选项。选项中有一项为多余选项。(共8分,每小题2分) There was a boy who was sent to a boarding school.He used to be the brightest student in his class. He was at the top in every competition. 1 . His grades started dropping. He hated being in a group. He was lonely all the time. He felt that no one loved him. His parents began to worry. But even they did not know what was wrong. 2 . They sat on the bank of the lake near the school. The father started asking him questions about his classes, teachers and sports. Then he asked, “Do you know, son, why I am here today?” The boy said, “To check my grades?” “No, no,” his dad replied. “I am here to tell you that you are the most important person for me.I want to see you happy. I don’t care about grades. ___3 . YOU ARE MY LIFE.” Now the boy had everything he wanted. 4 . He meant the world to someone. Thanks a lot, Dad. YOU ARE MY LIFE.
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