第四部分写作第一节任务型阅读（每空一词0.5分，共5分）More than a century after its discovery, Alzheimer’s disease i

第四部分写作
第一节任务型阅读（每空一词0.5分，共5分）
More than a century after its discovery, Alzheimer’s disease is still destroying people’s brains. The cause remains unknown.
Alzheimer’s disease is the most mon disability or mental sickness called dementia. Dementia is the loss of thinking ability that is severe enough to interfere with daily activities.
About thirty million people around the world have Alzheimer’s disease. In the United States, more than five million people are said to suffer from this slowly increasing brain disorder (疾病).
Alzheimer’s disease generally develops differently in each person. Yet some early signs of the disease are mon. The victims may not recognize changes in themselves. Others see the changes and struggle to hide them.
Probably the most mon early sign is short-term memory loss. The victims cannot remember something that happened yesterday, for example. Also, the victims have increasing difficulty learning and storing new information. Slowly, thinking bees much more difficult. The victims cannot understand a joke, or cannot cook a meal, or perform simple work.
Another sign of the disease is difficulty solving simple problems. The patients might not know what to do if food on a stove is burning. Also, people have trouble following directions or finding their way to places they have known all their lives.
Yet another sign is struggling to find the right words to express thoughts or understand what is being discussed. Finally, people with Alzheimer’s disease seem to change. Quiet people may bee noisy. They may easily bee angry and lose their ability to trust others.
Alzheimer’s disease affects memory and personality. The victims slowly lose their ability to deal with everyday life.
Victims of Alzheimer’s disease do die from its effects or conditions linked to it. But death may not e for many years.
Patients cannot fully recover from the disease. But many can be helped by medicine. That is especially true if the disease is found early.
Title
Alzheimer’s disease: The World’s Most Common Form of Dementia
Current situations
★ The disease was _76_  over a century ago, and is still destroying people’s brains.
★ About thirty million people worldwide _77_  from the disease.
★ More than five million Americans have this slowly increasing brain disorder.
Cause
It is still     78    .
 _ 79_
★ Short-term memory loss.
★ The victims find it more difficult to learn and     80_ new information.
★ The victims have difficulty in thinking.
★ Solving simple problems has bee difficult for them.
★ The victims struggle to express themselves     81    .
★ The victims’     82     seem to change .
    83    
Memory and personality are affected.
The basic ability will be slowly_84    .
Death may occur to victims of the disease.
Treatment
The patients can be helped at an early stage by medicine but cannot be     85    of the disease.
76----85   discovered;  suffer;  unknown;  Signs / Symptoms;  store