ответить на вопросы к тексту 50 is it worth buying them? ” men have walked on the moon, transplanted hearts and invented machines to think for them. but they cannot cure the common cold. scientists have been working on the problem for years but the most optimistic expectation was the hope that they would find a cure within the next 10 years. so what was their advice on coping with a cold meanwhile? in urban areas we have about three colds a year and they are caused not by wet feet but by viruses which are always changing so that a vaccine prepared from one is useless against the next. but every year the pharmaceutical companies spend millions of pounds trying to persuade us that their product will help us get rid of our cold. they admit they can't cure the cold, but they do promise to relieve the symptoms. we looked at 10 well-known brands of cold medicine and asked a doctor to explain, exactly what they contain, and his opinion on their effectiveness. nearly all contained a painkiller, either aspirin or paracetamol. these help to reduce temperature and relieve general aches and pains. aspirin can irritate the stomach, so paracetamol is generally preferred. the worst thing about them was the cost. advertising and packaging had increased the price of relatively cheap ingredients, and in many cases you could get the same relief from just paracetamol taken with a warm drink of lemon and honey. questions: 1. what is the text about? 2. what are common colds caused by? 3. why is paracetamol generally preferred? 4. what caused the rise in the price of medicine for colds? 5. people can get the same relief from just paracetamol. why do pharmaceutical companies keep on producing more and more new cold medicine? 6. what is the main idea of the text?