vocabulary 1 and 2

4. books, movies, or cartoons about an imagined future, especially about space travel or other planets
7. order, especially one given by a soldier
8. a device that is used to record that something is present or that there are changes in something
11. (a device that produces) a powerful, narrow beam of light that can be used as a tool to cut metal, to perform medical operations, or to create patterns of light for entertainment
12. the ability of a computer or other machine to understand spoken instructions or to recognize who a human voice belongs
14. series of instructions that can be put into a computer in order to make it perform an operation
16. exact and accurate
18. facts about a situation, person, event, etc
19. involving a lot of different but related parts
20. relating to activities in which you meet and spend time with other people and that happen during the time when you are not working

1. moving or walking around freely
2. technology that makes it possible for a computer to recognize a digital image of someone's face
3. operated by a machine, or connected with machines or their parts
5. typical quality or an important part of something
6. a person you spend a lot of time with often because you are friends or because you are traveling together
9. a system for controlling something such as a machine or vehicle from a distance, by using electrical or radio signals
10. to order, limit, or rule something, or someone's actions or behavior
13. a piece of work to be done, especially one done regularly, unwillingly, or with difficulty
15. to say or do something as a reaction to something that has been said or done
17. A dangerous person, animal, thing, or activity could