搜题请搜索小程序“爱下问搜题”
问题 单项选择题 A3/A4型题

扭挫伤患者200人，用某种疗法治疗后有效者150人；又腰肌劳损患者100人，用同样方法治疗，有效者60人，欲比较两组疗效有无差别

检验方法可用（）

 

A.四格表资料χ2检验或μ检验

B.成组设计t检验

C.配对设计t检验

D.配对设计χ2检验

E.目测可知扭挫伤患者有效率较高

答案

参考答案：A

判断题

价值观对动机没有导向的作用。
查看答案
补全对话，情景问答

从方框中选择合适的句子补全对话，其中有两项是多余的。

A.  Do you sleep well ?

B.  Do you do exercise ?

C  You have a bad illness .   

D. Do you often have breakfast ?

E.  What's the matter with you?    

F. You are not ill .

G.  When did it start ?

A woman (W) is not feeling very well.  She comes to see the doctor (D).

W: Good morning, doctor.

D: Good morning, madam.  1. _______

W:  I feel very weak.  I can hardly do any work, doctor.

D:  2._______

W: A month ago.

D:  Do you have a headache?

W: No, I don't.

D:  3. _______

W: Yes, I sleep very well.

D:  4. _______

W: No, I don't.  And I have little food for lunch because I want to keep thin.

D: Oh,  I see.  5_______ You need to take more food and do some exercise every day.

    You can be better soon.
查看答案