问题详情：
Since Alzheimer’s disease (阿尔茨海默病)and Parkinson’s disease (帕金森病) are common and many notable people have developed them, they have received more public attention.
Alzheimer’s Disease
Many people imagine that Alzheimer’s disease, the degenerative (退化的) disorder that eventually leaves sufferers with total memory loss, is an inevitable result of aging. This is not so. While the risks of contracting the disease increase with age, there are many elderly people whose memories are perfect. Most of us are so ill-__51__ about all forms of memory loss that we label everything as “Alzheimer’s ”. Alzheimer’s disease itself can affect people as young as 30 and can progress either quickly or slowly. It can also __52__ the blame for other non-degenerative conditions such as deep depression. __53__, only an examination of the brain tissue during an autopsy (解剖) can produce an accurate __54__ of the disease.
The causes of Alzheimer’s are unknown. They may be either __55__ or environmental. A study in 1996 of 13,000 people whose parents or siblings had the disease showed they had five times __56__ chance of passing away by the age of 80 than those with no family history of the problem.
__57__, there are other factors. In a study of identical twins, it was found that only about half of the twin pairs developed Alzheimer’s and, when both twins __58__ it, they did so as much as 15 years apart. The possibility that environment plays a part was boosted by another 1996 study, this time of two groups of elderly Japanese men. One group lived in Hawaii, the other group in Japan. The Hawaiian group had a much higher incidence of the disease.
Aluminum (铝) has been blamed for the development of Alzheimer’s. This is because a high level aluminum has been found in the brains of sufferers. The disease was first diagnosed at the beginning of the 20th century. It was at this time that aluminum was becoming widely __59__ for use in cooking pots.
Memory loss, __60__ in performing familiar tasks, and problems with abstract thinking are all indicators of the beginning of the disease. One unusual feature is its impact on language. It attacks nouns first, then verbs. Grammar is one of the last things to go.
Parkinson’s Disease
Parkinson’s disease (PD) is a progressive disorder of the central nervous system which __61__ more than one million Americans. Individuals with PD lack the substance dopamine (多巴*), which is __62__ for the central nervous system’s control of muscle activity. Parkinson’s Disease is often characterized by shake, inflexibility in limbs and joints, speech disability and difficulty in __63__ physical movement. Late in the course of the disease, some patients develop dementia (痴呆症) and eventually Alzheimer’s disease. __64__, some Alzheimer patients develop symptoms of Parkinson’s disease. Medications such as levodopa (左多巴), which changes itself into dopamine once inside the brain, which prevents degeneration of dopamine-containing neurons (神经细胞), are used to improve diminished or __65__ motor symptoms in PD patients, but do not correct the mental changes that occur.
51. A. judged B. equipped C. informed D. advised
52. A. take B. put C. lay D. hold
53. A. On the other hand B. For example C. After all D. In the end
54. A. description B. demonstration C. diagnosis D. illustration
55. A. natural B. instinctual C. genetic D. internal
56. A. slighter B. fainter C. less D. more
57. A. Therefore B. However C. Instead D. Finally
58. A. came up with B. did away with C. went down with D. put up with
59. A. available B. valuable C. memorable D. inaccessible
60. A. complaint B. difficulty C. ease D. complexity
61. A. touch B. influence C. concern D. affect
62. A. important B. unimportant C. priceless D. worthless
63. A. stopping B. changing C. initiating D. controlling
64. A. Additionally B. Contrarily C. Consequently D. Particularly
65. A. treated B. showed C. released D. reduced
【回答】
CADCC DBCAB DACBD
知识点：健康保健类
题型：完型填空
