Английский для повседневного общения (English for every day use). Колодина Н.И - 18 стр.

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territorial monopoly in the Plains. Because Indians did not have the wheel and had dragged their belongings

from one settlement to another, horses also enabled them to become more mobile and expedient during tribal

migrations. In fact, the Cheyenne abolished the custom of discarding belongings and tepee skins simply be-

cause there were no means to transport them.

Text 4. Read, translate and retell.

The symptoms of hay fever include watery and itchy eyes and a runny, congested nose. People suffering

from hay fever may experience occasional wheezing and repeated bouts of sneezing and may even lose their

sense of smell. Some victims of hay fever may also have stopped-up ears. About 30 percent of those who

suffer from hay fever may develop the symptoms associated with periodic asthma or a sinus infection. The

allergen-antibody theory does not fully explain allergic reactions because the membranes and glands in eyes

and ears are controlled by the independent nervous system, which keeps these organs in balance. But the in-

dependent nervous system itself is part of the emotional-response center and may cause the feelings of anger,

fear, resentment, and lack of self-confidence in reaction to allergy-causing substances.

The most common cause of hay fever is the pollen of ragweed, which blossoms during the summer and au-

tumn. When airborne pollen particles, as well as mold, come into contact with the victim's membranes, they

can cause allergic reactions that release histamine and result in a virtual blockage of air passages. To prevent

hay fever or to decrease the severity of its symptoms, contact with the ragweed pollen should be reduced.

Although some communities have attempted to eliminate the plants that cause the reactions, elimination pro-

grams have not been successful because airborne pollen can travel considerable distances. Antihis-tamine

can help with short but severe attacks. Over extended periods of time, however, patients are prescribed a se-

ries of injections of the substance to which they are sensitive in order to increase immunity and thus be re-

lieved of the seasonal allergy.