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7. Some crude oil contains gasoline, while another sort is
rich in lubricants.
8. One type of oil has gas base another wax or paraffin bases.
9. The rotted animals and plants trapped between the layers
of stone were changed by erosion and weathering.
10. The oil was forced by enormous pressure into the tiny
pores of soft rock like sandstone and limestone.

Exercise 2. Underline the correct item
1. The oil is smelly black ….which forms greasy puddles on
the garage gloor:
a) solid
b) liquid
c) gas
d) gaseous liquid
2. The main product of oil which runs our cars, trucks, buses
and boats is:
a) hydrogen
b) carbon
c) gasoline
d) methane
3. How do we call other petroleum products which are used
to make paints, cleaner, waxes?
a) petrochemicals
b) sandstone
c) limestone
d) marble
4. Crude oil is a black, heavy liquid made up almost entirely
of two elements:
a) methane and propane
b) gasoline and gas
c) hydrogen and carbon
d) methane and carbon

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