Прочитайте текст и заполните пропуски подходящими по смыслу словами. Eye disease is one of the most ...: ответ на тест 933075 - Английский язык

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Eye disease is one of the most common forms of ill health, particularly in the elderly and many severe eye 1_______ are only partially treatable. Problems with the 2_______ pathway (eye, brain, eyelids, and lacrimal system which protects the eye) keep a steady flow of patients through the surgeries of both ophthalmologists who 3_______ surgery and optometrists / opticians who prescribe optical aids like 4_______.

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Headache is a symptom of many 1_______. It may occur with common cold, fever, eye strain or hunger. It may 2_______ mumps, malaria, measles and many other infections. But if severe 3_______ persists you should consult a doctor. Frequent and 4_______ headache may sometimes be a symptom of brain tumour.

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To protect the public, all 1_______ must be tested and officially authorized to make sure that they are safe and produced to a quality 2_______. There are different types of medicines. Some are only available on 3_______, others are only available from pharmacies, and there are a small number that can be bought from other retail outlets. To be sure that you get the best product and advice for your needs, ask your 4_______, the expert on medicines.

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The word gastroenterology comes from two Greek words: gastros for stomach and enteron for intestine. Therefore hospital gastroenterology 1_______ deal with illnesses of the digestive system or gastrointestinal (GI) tract. This is basically a long hollow 2_______ about 6.5 metres long going from the mouth to the anus which joins a string of organs including the oesophagus, stomach, small intestine, 3_______, gall bladder, and pancreas. Medical science divides the GI tract into the upper tract and the 4_______ tract – also known as the upper and lower bowels.

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Unlike other diseases, there is no objective way to make a 1_______ of mental illness, and very often a diagnosis is based on observations of behaviour and scores in psychological tests. The dividing lines between madness, 2_______, and normality are in fact rarely clear, though strange behaviour and impulses are usually associated with mental illness if suffering is involved.
‘Mental illness’ is a broad label for 3_______ that include
– 4_______ instability
– behavioural disorders
– cognitive dysfunction

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What is the age-related presbyopia treated with?
Glasses are prescribed when light rays do not focus correctly on the retina. If they focus in front of the retina, the result is short-sightedness, also called myopia. This is treated by a concave lens. If light rays focus behind the retina, the result is long-sightedness, also called presbyopia. This is treated with a convex lens. There is laser surgery available now for these problems, though it is not able to treat age-related presbyopia which most people develop in their mid 40s because by that time the lens has lost too much flexibility.