阅读理解Alzheimer’sdiseaseisamajornational

阅读理解 Alzheimer’s disease is a major national health problem. Nearly 2 million Americans over the age of 65 have Alzheimer’s disease. It is a leading cause of death among the elderly. But Alzheimer’s disease is not confined （限于） to the aged. There may be a million or more people under the age of 65 suffering from the disease.
At one time, people suffering from the disease were said to be“getting old”.The disease was thought to be a natural part of growing old, but it is now known that Alzheimer’s disease strikes young and old alike. It is an organic disease which destroys brain cells.
Alzheimer’s disease affects the patient’s memory, speech, and movement. In the beginning stages of the disease, the patient may seem slightly confused. He may have trouble speaking, then the patient’s memory begins to fail. He may forget dates, numbers, names and plans.
As the disease progresses, the patient may not recognize family and friends. These symptoms（症状） often cause terrible anxiety in the patient. He may feel lost and frightened. Sometimes the patient reacts with wild and bad behavior.
In the last stages of the disease, the patient may not be able to take care of himself. He may have lost the ability to speak and walk.
Scientists don’t know exactly what causes Alzheimer’s disease. It may be caused by a virus.It may be caused by a poisonous substance（物质） in the environment. At present, there is no cure for the disease. But there are ways to slow its progress. Exercise and physical treatment can help the patients of this disease1.The main idea of the passage is that Alzheimer’s disease ______.A.is a terrible part of the aging processB.is an organic disease that affects young and oldC.can be cured by physical treatmentD.causes forgetfulness2.All of the following are symptoms of Alzheimer’s disease EXCEPT______.A.forgetfulnessB.difficulty in speakingC.loss of sightD.loss of the ability to walk3.According to the passage, which of the following may be a cause of Alzheimer’s disease?A.Poisons produced by the brainB.Getting oldC.A virusD.Lack of exercise4.The progress of Alzheimer’s disease can be slowed by______.A.operationB.a change in environmentC.medicinesD.physical treatment and exercise

BCCD解析试题分析：本文主要介绍了不仅老年人得老年痴呆症，年轻人也会有这种病。
1.作者写的目的就是要让读者了解不仅老年人得老年痴呆症，年轻人也会有这种病。2.细节归纳题。健忘、说话困难、不能行走都是老年痴呆症的表现。
3.对于老年痴呆症的起因，科学家现在还不能准确了解，只推断是由一种病毒引起的。
4.细节理解，根据“Exercise and physical treatment can help the patients of this disease.”
考点：健康保健类短文阅读理解
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