各种γ射线源产生的射线均是单能辐射。

中等口径的劳动力市场，是指劳动要素交换场所与劳动要素()两者之和。

A、流动趋势

B、劳动要素配置关系

C、交换关系

D、市场配置关系

What a good idea it is that Sarah and Dave are supposed to ______________ as movie characters for the party.

A．give up

B．call up

C．dress up

D．build up

第二部分

I 完形填空（共15小题，每小题2分，满分30分）

阅读下面短文，从短文后所给各题的四个选项（A、B、C、D）中选出能填入空白处的最佳选项，并在答题卡上将该项涂黑。

Sea turtles have been on Earth for millions of years, but they may soon die out. The main 11   to them is people who kill them for food, according to Dr. Wallace J. Nichols of the University of California.

But the latest news may   12    turtle hunting: Dr. Nichols has found that sea turtles    13   a lot of pollution from the ocean. This pollution is 14    for both turtles and ___15_____ It can cause __ 16 __ damage to their bodies and lead to death. Research shows that many people get sickand even  17  eating sea turtle meat. 

In the US, most people have    18  eaten turtle. This is because turtles are   19   by the United States law, which makes it  20    to harm or kill these amazing animals.“But many people in other countries still eat them,” explains Nichols. “Our first  21   was to save turtles; now we must save  22    too.”

Davis said he also wants to send out a bigger  23   that we should protect the oceans.“The   24  of the ocean, animals in the ocean, and our own health are all   25   . A clean ocean is really good for us too because of the food we eat from there.”

11 A. doubt              B. stream             C. danger            D. worry

12 A. accelerate          B. slow               C. improve           D. change

13 A. cause              B. expand             C. absorb            D. reduce

14. A. beneficial                   B. unhealthy                 C. unfit                    D. annoying

15. A. animals            B. oceans                   C. seas              D. humans

16.A. accidental          B. occasional           C. unknown          D. serious

17. A. die from                    B. survive from            C. suffer from         D. free from

18. A. often                         B. seldom                    C. never                     D. rarely

19. A. qualified           B. protected           C. restricted          D. produced

20. A. impossible          B. difficult           C. illegal              D. abnormal

21. A. goal               B. impression         C. difficulty           D. cost

22. A. Earth              B. ocean             C. people             D. animals

23. A. advertisement       B. message           C. sign               D. problem

24. A. turtles                 B. depths             C. health                   D. expansion

25. A. concerned          B. disturbed           C. developed         D. connected 

一般环境，就是指宏观环境，也称为企业的()

A、运行环境

B、开放环境

C、封闭环境

D、间接环境

漏洞扫描从扫描模式上分类可以分为（）。

A、主机漏洞扫描

B、网络漏洞扫描

C、硬件漏洞扫描

D、服务器漏洞扫描

E、软件漏洞扫描