首页
登录
职称英语
When the heart breaks down, it beats irregularly or not at all. A bone can c
When the heart breaks down, it beats irregularly or not at all. A bone can c
游客
2023-09-06
26
管理
问题
When the heart breaks down, it beats irregularly or not at all. A bone can chip or snap. But when the complex network of neurons in our brain fails to work, the result can be a near-endless variety and combinations of mental illnesses.
It is normal to sometimes be sad, happy, anxious, confused, forgetful or fearful, but when a person’s emotions, thoughts or behavior frequently trouble them, or disrupt their lives, they may be subject to mental illness. According to the World Health Organization (WHO), about 450 million people worldwide are affected by mental, neurological or behavioral problems at any time.
However, determining that someone has a mental illness, and which one, is one of the challenges psychiatrists face.
Historically, some symptoms of mental illness, such as eccentric behavior and hearing voices, have been taken as evidence of heavenly communication or demonic (恶魔的) possession.
More recently, brain scans have directly linked these conditions with changes in levels of neurotransmitters — chemicals that convey messages across neurons — or alterations in the number or structure of neurons in different brain areas. For instance, people suffering from depression often display lowered levels of the neurotransmitter serotonin (血清素).
In a few cases, the immediate cause of the malfunction has been identified. Alzheimer’s disease, a major source of dementia and memory loss in the elderly, is caused by the accumulation of protein plaques which choke neurons in the brain.
Some infectious diseases can also develop into a mental illness. Untreated HIV infection can cause dementia, as can the uncontrolled replication of the germ that causes syphilis (梅毒).
In many cases the precise cause is unclear and experts suspect that many different factors are involved. The chance that identical twins both develop schizophrenia (精神分裂症) is much higher than that for fraternal twins or siblings, proving the strong role of inherited genes. But scientists are accumulating a growing list of other risk factors that predispose people to this condition, including prenatal exposure to famine conditions, certain infections or exposure to lead. The season of their birth also seems important — birth in winter or early spring increases the risk, as does an older father and, controversially, child abuse.
Genes are also thought to influence many other mental health problems, including: anorexia, autism, Alzheimer’s disease and bipolar disorder.
Some researchers believe that smoking cigarettes and taking recreational drugs may elevate a user’s risk of mental illnesses. [br] According to the passage, Alzheimer’s disease is the main cause of the elderly people’s______.
选项
答案
dementia and memory loss
解析
空前的people’s表明,本空应填一名词(短语)。由题干中的Alzheimer’s disease将本题出处定位到第六段第二句。题干中的the main cause of对应该句的a major source of,the elderly people’s对应in theelderly,故a major source of后的dementia and memory loss为本题答案。
转载请注明原文地址:https://tihaiku.com/zcyy/2989159.html
相关试题推荐
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
Whentheheartbreaksdown,itbeatsirregularlyornotatall.Abonecanc
随机试题
【教学过程】 环节一:课堂导入 复习导入,教师引导学生复习摩擦起电和感应起电,并请学生简述两种起电的原理。教师提出问题:除了摩擦起电和感应起电外是否存在其他
痢疾杆菌在外界环境的生存力以哪个群的生存力最强A.宋内菌 B.志贺菌 C.福
构成盆膈的肌肉是A.肛提肌 B.会阴深横肌 C.会阴浅横肌 D.坐骨海绵体
吸氧时流量为3L,氧浓度为:A.29% B.33% C.35% D.39%
精索、睾丸淋巴管阻塞、破裂可引起A:睾丸炎B:附睾炎C:精索肿胀D:睾丸鞘
Thechangeinthatvillagewasmiraculou
左边三个图形给出了同一个立体图形的不同侧面,右边四个图形中只有一个与该立体图形相
境内上市公司所属企业到境外上市,其股东大会应当就()事项逐项进行表决。A:董事
按支付的货币形式不同,支付结算可分为()。A.票据结算 B.现金结算 C.
根据《水土保持法》,生产建设项目中的水土保持设施应当与主体工程同时()。A
最新回复
(
0
)