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问题 单项选择题

病例对照研究属于哪一种流行病学研究方法

A．描述流行病学

B．分析流行病学

C．实验流行病学

D．理论流行病学

E．临床试验

答案

参考答案：B

阅读理解
阅读理解。
       The following table shows some results of a survey. 800 Japanese students were asked to tell what they
thought of their teachers. There are three kinds of teachers: the new (with less than three years' teaching), the
middle-aged (ten to twenty years), and the old (twenty to thirty years). The numbers in the table show the
percentage (百分率) of the students who answered "very satisfied (满意) for each question item."
       
     Question items
New
Middle-aged
Old
 1. Make his lessons interesting
 42
 56
 70
 2. Explain (解释) clearly
 33
 48
 68
 3. Have relaxed manner (放松的举止)
 30
 46
 65
 4. Write well on the blackboard
 9
 43
 56
 5. Let students ask questions in class
 18
 47
 30
 6. Look through students' exercise books
 22
 30
 43  
 7. Speak loudly   45 85 54
 8. Treat students fairly （公平） 43  56 42
 9. Care about students'ideas   47 43 17
 10. Spend time with students between classes   65 30 15
1. The old teachers are loved by most of the students in their ability (能力) to ___________.
[ ]
A. be fair to any students
B. listen to what students say
C. explain texts clearly
D. understand and play with students
2. What kind of teachers'lessons are the most interesting?
[ ]
A. The new.
B. The middle-aged.
C. The old.
D. We don't know.
3. According to the table, which of the following is true?
[ ]
A. In the new teachers'classes, students seem to ask questions more freely.
B. Many students seem to be satisfied with the new teachers'handwriting.
C. The middle-aged teachers spend the most time with students after class.
D. After class, the new teachers like to stay with students more often.
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问答题 简答题

目前常采用的保证配合精度的装配方法有哪几种？
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