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某医生收集10例某病患者，记录了患者在抢救期间的总胆固醇水平，用爱丁堡斯堪的纳维亚神经病学卒中SNSS量表评定患者的神经功能缺损程度。已知量表评分呈偏态分布，若要分析总胆固醇与神经功能评分间的相关性，宜用（）
A、积差相关系数
B、直线回归系数
C、等级相关系数
D、决定系数
E、截距
相关热点： 胆固醇 神经病学
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More About Alzheimer' s Disease
Scientists have developed skin tests that may be used in the future to identify people with Alzheimer's
disease and may ultimately allow physicians to predict who is at risk of getting this neurological
（神经病学的）disorder.
The only current means of diagnosing the disease in a living patient is a long and expensive series of
tests that eliminate every other cause of dementia.
"Since Alois Alzheimer described the disease nearly a century ago,people have been trying to find a
way to accurately diagnose it in its early stages,"said Patricia Grady,acting director of the National Institute
of Neurological Disorders and Stroke in Bethesda,Maryland."This discovery,if confirmed,could prove a big
step forward in our efforts to deal with and understand the disease."
Alzheimer's is the single greatest cause of mental deterioration in older people,affecting between 2.5
million and 4 million people in the United States alone.The devastating disorder gradually destroys memory and
the ability to function,and eventually causes death. There is currently no known treatment for the disease.
Researchers discovered that the skin cells of Alzheimer's patients have defects that interfere with their
ability to regulate the flow of potassium in and out of the cells.The fact that the cell defects are present in the
skin suggests that Alzheimer's results from physiological changes throughout the body,and that dementia may
be the first noticeable effect of these changes as the defects affect the cells in the brain,scientists said.
The flow of potassium is especially critical in cells responsible for memory formation.The scientists also
found two other defects that affect the cells' supply of calcium,another critical element.
One test developed by researches calls for growing skin cells in a laboratory culture and then testing
them with an electrical detector to determine if the microscopic tunnels that govern the flow of potassium are
open.Open potassium channels create a unique electrical signature.
A spokesman for the Alzheimer's Association said that if the validity of the diagnostic test can be
proven it would be an important development,but he cautioned that other promising tests for Alzheimer's
have been disappointing. The passage indicates that Alzheimer's is a disease________.A:common to people,old and youngB:not costly to be curedC:easy to be handledD:not easy to be diagnosed
More About Alzheimer' s Disease
Scientists have developed skin tests that may be used in the future to identify people with Alzheimer's
disease and may ultimately allow physicians to predict who is at risk of getting this neurological
（神经病学的）disorder.
The only current means of diagnosing the disease in a living patient is a long and expensive series of
tests that eliminate every other cause of dementia.
"Since Alois Alzheimer described the disease nearly a century ago,people have been trying to find a
way to accurately diagnose it in its early stages,"said Patricia Grady,acting director of the National Institute
of Neurological Disorders and Stroke in Bethesda,Maryland."This discovery,if confirmed,could prove a big
step forward in our efforts to deal with and understand the disease."
Alzheimer's is the single greatest cause of mental deterioration in older people,affecting between 2.5
million and 4 million people in the United States alone.The devastating disorder gradually destroys memory and
the ability to function,and eventually causes death. There is currently no known treatment for the disease.
Researchers discovered that the skin cells of Alzheimer's patients have defects that interfere with their
ability to regulate the flow of potassium in and out of the cells.The fact that the cell defects are present in the
skin suggests that Alzheimer's results from physiological changes throughout the body,and that dementia may
be the first noticeable effect of these changes as the defects affect the cells in the brain,scientists said.
The flow of potassium is especially critical in cells responsible for memory formation.The scientists also
found two other defects that affect the cells' supply of calcium,another critical element.
One test developed by researches calls for growing skin cells in a laboratory culture and then testing
them with an electrical detector to determine if the microscopic tunnels that govern the flow of potassium are
open.Open potassium channels create a unique electrical signature.
A spokesman for the Alzheimer's Association said that if the validity of the diagnostic test can be
proven it would be an important development,but he cautioned that other promising tests for Alzheimer's
have been disappointing. The passage indicates that Alzheimer's is a disease________.A:common to people,old and youngB:not costly to be curedC:easy to be handledD:not easy to be diagnosed
一个人从饮食中摄入的胆固醇和脂肪越多,他的血清胆固醇指标就越高。存在着一个界限,在这个界限中,二者成正比。超过了这个界限,即使摄人的胆固醇和脂肪急剧增加,血清胆固醇指标也只会缓慢地有所提高。这个界限对于各个人种是一样的,大约是欧洲人均胆固醇和脂肪摄入量的1／4。可见()。
A．中国的人均胆固醇和脂肪摄入量是欧洲的1/2，但中国的人均血清胆固醇指标不一定等于欧洲人的1/2
B．如果把胆固醇和脂肪的摄人量控制在上述界限内，就能确保血清胆固醇指标的正常
C．上述界限可以通过减少胆固醇和脂肪的摄入量得到降低
D．3/4的欧洲人的血清胆固醇含量超出正常指标
关于胆固醇的描述，下列不正确的说法为（ ）。
A、胆固醇能构成细胞膜
B、胆固醇可转化成类固醇激素
C、胆固醇不能合成胆汁酸
D、胆固醇可转变为维生素D
下列哪项为胆汁主要成分（ ）
A、胆固醇、磷脂、无机化合物
B、胆固醇、胆盐、磷脂
C、胆固醇、胆盐、蛋白质
D、胆固醇、磷脂、蛋白质
E、胆固醇、胆盐、无机化合物