Test Yourself. Иванова Ю.В - 30 стр.

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1. very important 1. vital
2. to bring a ray of light to a fixed point 2.
3. the sort of power that lights our homes 3.
4. half the diameter 4.
5. place where something comes from 5.
6. uncovered 6.
7. a movement of electricity 7.
8. a watercourse 8.
9. flow of electricity, air or sea-water 9.
10. man-made 10.
11. the process of bringing water to dry areas 11.
12. a flat surface 12.
13. the smallest particle of an element, which can take part
in a chemical change
13.
14. to change from gas to liquid 14.
15. a natural or artificial moon which revolves around a
planet
15.
16. to make things seem bigger 16.
17. to look at very closely and carefully 17.
18. the smallest living unit 18.
19. to clean 19.
20. to make dirty 20.
21. to put down, to leave behind 21.
22. to move out or send out in all directions from a
common centre
22.
23. a substance which speeds up a chemical change
without changing itself
23.
24. the soil found on the bed of a river 24.
25. wet to touch 25.
26. to build on 26.
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