Test Yourself. Иванова Ю.В - 41 стр.

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18. Dams are not only used to produce hydro-electric a) turbine b)

electricity c) power.

18.

19. Reptiles are covered with a) lungs b) scales c) seeds and are

cold-blooded.

19.

20. A microscope is an instrument which a) magnifies b) solidifies

c) preserves very small objects.

20.