Test Yourself. Иванова Ю.В - 38 стр.

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25. Backward thrust e) volume as the temperature rises. 25.
26. Chemists not only
analyze compounds
a) before it is pumped back into
rivers, seas.
26.
27. Amphibians usually have b) hydro-electric power. 27.
28. Sewage is treated and
broken down
c) it rises.
28.
29. As water vapour is
lighter than air
d) but also combine elements to form
compounds.
29.
30. Dams are used to
produce
e) moist skin.
30.
31. The bigger the difference
between the pressures
a) than all other chemical compounds
together.
31.
32. The rushing water b) consist of only one cell. 32.
33. Action is c) the stronger the wind is. 33.
34. There are more carbon
compounds
d) drives the turbines.
34.
35. Some living things e) equal to reaction. 35.
36. When oil is burnt in
industry
a) an unchanging body temperature.
36.
37. Snowflakes are crystals b) produces about 12 cubic
centimeters of steam.
37.
38. A microscope is an
instrument
c) some poisonous substances are
formed.
38.
39. One cubic centimeter of
water
d) which magnifies very small
objects.
39.
38

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