Dementia is an acquired mental impairment syndrome with cognitive impairment as the core symptom. The degree of mental impairment is sufficient to interfere with social or professional functions. It is a chronic progressive disease. The scope of the impairment involves memory, behavior, personality, judgment. , Attention, visual spatial skills, language, logical reasoning and many other advanced neural functions. According to statistics, dementia has become the fourth leading killer after cardiovascular disease, cancer and stroke, seriously threatening the health and life of the elderly Quality. Age is an important risk factor for Alzheimer's disease. It is generally believed that the prevalence of dementia will double for every 5 years of age in people over 60 years old. As the elderly population continues to increase, Alzheimer's will become A serious public health problem in our country. According to this text, is the following statement correct? ["Alzheimer's sometimes develops suddenly.", 'Incidence of dementia is related to education level.', 'The basic living ability of patients with dementia can be improved.', "The number of Alzheimer's patients in China will continue to rise."]