问题 单项选择题

关于流行病学的定义最准确的是()。

A.研究传染病在人群中的分布和影响分布的因素及制定预防对策的科学

B.研究疾病在人群中分布的科学

C.研究健康状态的分布及影响因素以便采取有效保健措施的科学

D.研究非传染性疾病在人群中的分布和影响分布的因素以及预防对策的科学

E.研究人群中疾病与相关健康状况的分布及其影响因素,并研究如何防治疾病及促进健康的策略和措施的学科

答案

参考答案:E

完形填空

Li Lei is a student __1__ Class Two, Grade Seven. He likes football very __2__. He often plays it after school. And he often goes home__3__. His home is __4__the school. His mother doesn’t worry __5__ him.

One Sunday morning Li Lei goes to a shop__6__his mother. The shop is very__7__. There are many things__8__it. They get some things. Then his mother says to Li Lei, "What do you _9_ ?"

"I want to get a red blouse," says Li Lei. "A red blouse?" asks his mother. "You are a __10__. You can’t wear a red blouse."

Li Lei smiled"OK, please get me football clothes."

1. A. at          B. of             C. on             D. with

2. A. good            B. fine           C. well          D. much

3. A. early            B. back          C. late           D. soon

4. A. near             B. in             C. on             D. to

5. A. for               B. with          C. about               D. at

6. A. to          B. from         C. on             D. with

7. A. small            B. big            C. nice          D. good

8. A. on         B. in             C. at              D. under

9. A. want             B. get            C. put            D. take

10. A. girl             B. woman      C. boy           D. man

单项选择题