问题 单项选择题 A1/A2型题

流行病学任务在有选择的人群中观察可疑病因与疾病和健康状况之间关联的方法是()。

A.描述性流行病学方法

B.分析性流行病学方法

C.实验性流行病学研究方法

D.数理实验法

E.观察法

答案

参考答案:B

阅读理解

阅读理解

Dear Donald,

     Last summer I had a chance to visit the other side of the world. | went to Beijing with my friends. I visited the

Great Wall and was deeply impressed by its length. I had never seen such a great wall before!  Walking less than

a mile on the wall made me very tired, but I was very excited. I used up three camera films in four hours.

     Shopping was another interesting part of the trip. In the Silk Market, I bought a silk shirt for  just a quarter of

the price the trader asked for.

     I have many memories and experiences to share. I am so lucky to have seen such a culture so different from my

own. I will remember my trip to china forever!

                                                                                                                                                               Youus,

                                                                                                                                                               Jane    

回答下列问题

1. Who visited Beijing last summer?

    ________________________________________

2. How many camera films did Jane use up in four hours on the Great Wall?

    ________________________________________

3. Which was another interesting part of the trip?

    ________________________________________

4. Did Jane buy a silk shirt?

    ________________________________________

5. Why is Jane so lucky?

    ________________________________________

单项选择题