Exercise 13. Match a line in A with a line in В to make a sentence
| A
| В
| | Major sources of noise
| is a problem for those trying to sleep.
| | There are two types of hearing loss:
| can affect reading ability in school-age children.
| | Noise psychological effects
| is based on the burning of fossil fuels.
| | Transportation
| can damage human health.
| | Aircraft noise
| that can damage human health.
| | Certain batteries contain heavy metals
| can transport heavy metals to rivers and lakes.
| | Environmental noise
| are undoubted.
| | Heavy metals
| can be airplanes at takeoff and landing.
| | The water that soaks through the soil
| conductive and sensorineural.
| |
Exercise 14. Put the verbs in brackets in the correct form (active or passive).
Air pollution (to be) the source of many materials that may (to enter) the human bloodstream through the nose, mouth, skin, and the digestive tract. Chemicals known to be harmful, such as benzene, lead and офег heavy metals, carbon monoxide, volatile nitrites, pesticides, and herbicides. These substances (to show) to produce harmful effects on the blood, bone marrow, spleen, and lymph nodes. Blood cells (to be) constantly undergoing turnover, with new blood cells entering the circulation as mature cells are lost, making the blood system especially vulnerable to environmental poisoning. For example, lead (to interfere) with normal red blood cell formation by inhibiting important enzymes. In addition, lead (to damage) red blood cell membranes and (to interfere) with cell metabolism in a way that (to shorten) the survival of each individual cell. Each of these harmful effects can (to result) in clinical anemia.
