牛津译林版高中英语选修模块七 牛津英语模块七Unit2 Word power教案-新版

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bad cough. The spots can cause the infected child much discomfort and normally become visible on the chest and stomach first. Cholera Cholera is a seriously infectious disease caused by drinking water. It may break out after flooding. Patients usually have diarrhoea, vomit and even die. It is reported that this disease is more frequently found in poor areas, mostly because people do not have access to clean drinking water. Yellow fever Yellow fever is a viral disease mainly spread by mosquitoes. Patients usually have jaundice, muscle pain, high fever or bleeding. It is reported that this disease is frequently found in Africa and Latin America. Typhoid Typhoid is an infectious disease caused by bacteria. It is transmitted by food or water and very common in some parts of the world. After infection, patients usually have a high fever and rose-coloured spots on the skin. Now people may have a vaccination to prevent this disease.

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