27. Fill in the table with the derivatives.

Noun	Verb	Adjective
1)	to suspect
2) cleanliness
3)		responsible
4)	to respire
5) contaminant
6)		building
7)	to measure
8) variety
9)		active
10)	to respond

GRAMMAR FOCUS

28. Translate the following sentences paying attention to the functions of the verb “to be”.

1) One reason for this concern is that their symptoms often get better when they are not in the building. 2) Some respiratory symptoms and illnesses can be associated with damp buildings. 3) It is to be clear what measurements of indoor contaminants show that workers are at risk for disease. 4) Medical tests and tests of the environment aren’t sufficient to establish which contaminants are responsible for a specific health condition. 5) Building-related symptoms are associated with building characteristics. 6) Indoor environments are highly complex and building occupants may be exposed to a variety of contaminants. 7) The indoor environment in any building is a result of the interaction of conditions. 8) The dynamics of the indoor environment are complex and are to be performed by a building scientist.

ACTIVE VOCABULARY

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

Nouns and noun phrases

lead	exhaust fan
radon	plumbing
threat	dust mite
floorboard	misconception

Verbs and verbal phrases

to diffuse	to crack	to get rid of
to gather	to fix
to linger	to accomplish
to accumulate	to hire

Adjectives

closed-in	fragrance-free
leaky	mild

READING TASK: Text 3

30. Do the following task and read the text below to check your answers.

Think of four things you can do personally to avoid indoor air pollution.

1) to close the kitchen door when cooking;

2) to use a kitchen extractor fan;

3) ______ ;

4) ______ .

How to Avoid In-Home Air Pollution

Did you know that indoor air quality can be worse than the air outdoors? Unlike outside, where wide open spaces and continuous breezes tend to diffuse pollution, the inside of a home is a closed-in space that gathers pollutants and holds them in. Even when you open your windows and have a well-ventilated home, pollutants tend to linger and, over time, can cause respiratory problems. These pollutants can include anything from dust to lead, to radon, to ordinary smog—none of which are things that you want to be breathing in large quantities.

Here are five things you can do to get rid of air pollution in the home.

1. Keep your floors clean. Floors tend to accumulate much of the dust that can rise into the air and present a threat of respiratory problems. In both hardwood floor and carpet, pollutants can build up not only on the surface but also below the carpet or floorboards. Be sure to keep the floors as fresh as possible, cleaning once a week, and consider having old carpet or hardwood flooring replaced every few years. Do keep a mat at the front door so that there’s less chance of tracking in dust.

2. Do a radon test. Radon is a colorless, odorless gas that has been shown to increase the risk of lung cancer. There are radon tests that you can purchase and perform at home, or you can hire a professional to do the test for you. In either case, if you find that you have an above-normal level of radon in your home, do take measures to get rid of it.

3. Don’t smoke indoors. A common misconception about second-hand smoke is that it’s only present when someone is actually smoking. But the reality is that all those chemicals that make smoking so dangerous get into the walls, floors, and furniture and can continue to cause harm even when no one is smoking.

4. Dehumidify. Things like molds and dust mites like to build up in areas where there is a high level of moisture. It’s a good idea to keep the humidity in your home around 30-50%. Here’s how you can accomplish that:

-use a dehumidifier;

-don’t give your houseplants too much water;

-crack a window or use an exhaust fan when showering, cooking, or washing dishes;

-fix any leaky plumbing in your home.

5. Use natural products: Chemicals in things like laundry products, dish soaps, and air fresheners can send lots of chemicals into the air. If you’re using any of these things, switch to mild, fragrance-free varieties made of natural ingredients.

COMPREHENSION CHECK