2019年职称英语考试卫生类A级完形填空专项练习

1、2019 年职称英语考试卫生类 A 级完形填空专项练习Scientists have developed skin tests that may be used in the future to identify people with Alzheimers disease and may ultimately allow physicians to predict _51_ is at risk of getting this neurological disorder.The only current means of _52_ the disease in a living patien

2、t is a long and expensive series of tests that eliminate every other cause of dementia.“ Since Aloes Alzheimer described the _53_ nearly a century ago, people have been trying to find a way to _54_ diagnose it in its early stages,” said PatriciaGrady, acting director of the National Institute of Neu

3、rological Disorders and Stroke in Bethesda, Maryland. “This discovery, if _55_ , could prove a big step forward in our efforts to deal with and understand the disease. ”Alzheimers is the single greatest _56_ of mental deterioration in older people, affecting between 2.5 million and 4 million people

4、in the United States _57_. The devastating disorder gradually destroys memory and the ability to function, and eventually causes death. There is currently no known _58_ for the disease.Researches _59_ that the skin cells of Alzheimers patients have defects that interfere with their ability to regula

5、te 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 _60_ from physiological changes throughout the body, and that dementia may be the first noticeable effect of these changes as the defects _61_ the cells in the brain, sc

6、ientists said.The flow of potassium is especially _62_ 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 _63_ growing skin cells in a laboratory culture and t

7、hen testing them with an electrical detector to determine if the microscopic tunnels that _64_ the flow of potassium are open. Open potassium channels create a unique electrical signature.A spokesman for the Alzheimers Association said that if the validity of the diagnostic test can be proven it wou

8、ld be an important _65_, but cautioned that other promising tests for Alzheimer s have been disappointing.51. A. what B. one C. it D. who52. A. fighting B. carrying C. transmitting D. diagnosing53. A. answer B. effect C. disease D. study54. A. slowly B. accurately C. newly D. incorrectly55. A. desig

9、ned B. announced C. confirmed D. reported56. A. cause B. factor C. focus D. exception57. A. finally B. lonely C. yet D. alone58. A. examination B. evidence C. treatment D. fact59. A. discovered B. predicted C. expected D. warned60. A. keeps B. breaks C. results D. translates61. A. affect B. remove C. collect D. form62. A. steady B. natural C. continuous D. critical63. A. at B. out C. for D. of64. A. start B. get C. follow D. govern65. A. chance B. concept C. development D. decision 参考答案51. D. who 52. D. diagnosing 53. C. disease 54. B.accurately 55. C. con