临床工作中，流行病学方法可用于A．探讨某种疾病的病因及危险因素 B．筛检某种疾病的病

发布时间：2018-01-16 05:12 │ 来源：www.tikuol.com

题型：单项选择题

问题：

临床工作中，流行病学方法可用于

A．探讨某种疾病的病因及危险因素

B．筛检某种疾病的病人

C．对诊断试验或方法进行评价

D．评价治疗效果与预后

E．以上均是

考点：临床执业医师预防医学人群健康研究的流行病学原理和方法

题型：单项选择题

阅读理解。

     Tom and Fred are students. They are both twelve years old, and they are in the same (相同) class in
their school. One day, they have a fight in class, and their teacher becomes angry. She says to both of
the boys, "Stay (待) here after school this afternoon, and write your names a hundred times (一百次)."
     After the last lesson, all the other students go home, but Tom and Fred stay in the classroom. They
began to write their names in their exercise books and wait for their teacher.
    When the teacher comes, Fred is crying. The teacher looks at him and says, "Why are you crying
(哭)?"
     "Because his name is Tom King, and my name is Frederick Hollingsworth," Fred says with tears
(眼泪) in his eyes." It is too bad that I have a very, very long name!"

1. Tom and Fred are not ______.

[ ]

A. in different school
B. in the same school
C. in the same class
D. classmates

2. Who has a long name?

[ ]

A. Tom
B. Author (作者)
C. Fred
D. Teacher

3. After school, the other students ______.

[ ]

A. stay in the classroom
B. go home
C. write their names
D. wait for the teacher

4. What is Fred doing when the teacher comes?

[ ]

A. He is playing
B. He is writing
C. He is crying
D. He is sleeping

5. Why is Fred crying? Because ______.

[ ]

A. he wants to go home
B. he can't write his name
C. he thinks his name is too long
D. he doesn't have an exercise book

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题型：单项选择题

（10分）欲制无水氯化铝并保存备用。现有仪器如下图所示，并有浓盐酸、水、固体烧碱、铝粉、二氧化锰、浓硫酸、碱石灰（主要成分为CaO， NaOH）、食盐固体等八种试剂。

设计的制取过程是：制氯气 → 净化和干燥氯气 → 制氯化铝

查资料得知：无水AlCl₃极易与水作用而变质：AlCl₃易升华

请回答下列问题：

（1）从上列仪器中选取必须的几种，连接成一个制无水氯化铝的连续装置，按前后顺序填写图的编号（可以重复使用）。

仪器编号、、、、、 ④

（2）写出实验过程中有关反应的化学方程式(任意2个)。

（3）以上连接装置中最后连接④的作用是

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题型：单项选择题

塞因塞用治法适用于（）

A.虚实夹杂

B.真实假虚

C.表实里虚

D.真虚假实

E.表虚里实

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题型：单项选择题

学校里，粥烧糊了，虽然大家感到很气愤，但没人敢表现出来。

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题型：单项选择题

某地20岁男子100人，其身高均数为 166.06cm，标准差为4.95cm；其体重均数为 53.72kg，标准差为5.41kg。欲比较身高和体重的变异度大小宜采用

A．极差

B．方差

C．标准差

D．变异系数

E．四分位数间距

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