18. Fill in the correct prepositions, translate the phrases, then choose any five items and make up the sentences of your own.

1) to air ___ home; 2) to move ___ place ___ place; 3) to spread ___ home; 4) to be appropriate ___ workshops; 5) to mix outdoor air ___ indoor air; 6) to force air out ___ cracks and openings; 7) to cool incoming air ___ outgoing exhaust air; 8) to be ___ pressure; 9) to cost ___ the range of; 10) air leaking ___ homes; 11) to pay ___ oneself ___ energy savings.

GRAMMAR FOCUS

19. Find in Text 1 the sentences with the ing-forms. Translate them into Russian.

A. 1) an enclosed place supplied with proper air for breathing; 2) smell coming from the bedroom walls; 3) mold growing inside walls; 4) to avoid using common sources of moisture, odors, and gases; 5) the source producing pollutants; 6) fans blowing outdoor air into the house; 7) existing ductwork; 8) an inexpensive way of providing fresh air; 9) to warm incoming air with outgoing exhaust air; 10) heated air from a boiler.

B. 1) Sources, including carpets, furniture, and drapes release fabric fibers and gases such as formaldehyde. 2) Fresh air is provided by fans blowing outdoor air into the house or by exhausting air from the house. 3) Exhaust fans pull stale air out of your home while drawing fresh air in through cracks, windows, or fresh air intakes. 4) Exhaust fans remove cooking odors by making the pressure in the kitchen lower than the air pressure outside. 5) Understanding how air moves inside your home can help you avoid or fix such ventilation-related problems as excess moisture, backdrafting, and radon. 6) Depending on your home's design and location and the type of system you select, a ventilation system may cost in the range of $500 to $1,500, including installation. 7) The cost to operate a typical ventilation system will be approximately $100 to $200 per year, depending on your home's location, the type of system used, and how your home was built. 8) With new construction, operating costs can be minimized by building a well-insulated, tightly sealed home with a well-designed ventilation system, high-efficiency furnaces and air conditioners and limiting the amount of outdoor air leaking into homes.

ACTIVE VOCABULARY

20. Give Russian equivalents of the following words and phrases. Try to memorize them.

Nouns and noun phrases

partition wall	air-conditioning plants	transom window
awareness	buoyancy	louver
velocity	challenge	grill
leeward side	attic fan	outlet
net area	rated fan volume	inlet
soffit	gable	roof overhang
incidence	casement window	hinge
scoop	glass pane	opening

Verbs and verbal phrases

to complete	to alleviate	to suck
to accomplish	to mount	to justify
to prevail	to induce	to orient

Adjectives

acceptable

perceived

Adverbs

naturally	economically
parallel	perpendicular

READING TASK 2