2. 外语
  3. People who work rotating night shifts appear to have a lower【S1】of Parkinson’s disease, the results of a study published in the

People who work rotating night shifts appear to have a lower【S1】of Parkinson’s disease, the results of a study published in the

admin2009-09-12  73
问题 People who work rotating night shifts appear to have a lower【S1】of Parkinson’s disease, the results of a study published in the American Journal of Epidemiology. And【S2】, an increased risk of developing this condition is linked to a longer average duration of sleep.
"Working rotating night shifts disrupts rhythms and may have a wide【S3】of physiologic(理疗)effects on shift workers," Dr. Honglei Chen, of the National Institutes of Health, writes.
"In the【S4】studies, some inference has been confirmed. Shift work has been【S5】to higher risks of some chronic diseases, including certain types of cancers," they note, but any effect on the risk of developing Parkinson’s disease has not been【S6】.
The researchers therefore【S7】data from the U.S. Nurses’ Health Study, which enrolled 84, 794 female nurses, to see if there was an association between working rotating night shifts and Parkinson’s disease risk. The risk of Parkinson’s disease was 50-percent lower among women who had at least 15 years of night shift work compared with those who never worked rotating night shifts.
After【S8】for differences in age and smoking status, the investigators found that a longer sleep duration was associated with a higher risk of Parkinson’s disease.
Plausible explanations for these results are lacking, Chen’s team points out. They note that shift
work has been associated with【S9】increase in blood level of uric acid(尿酸), "which may be【S10】against Parkinson’s disease."
A)therefore                                  I)doubtful
B)previous                                   J)number
C)range                                      K)little
D)linked                                     L)later
E)risk                                       M)modest
F)investigated                               N)protective
G)conversely                                 O)evaluated
H)accounting
选项
答案E
解析 此处应选择一个名词构成固定词组，根据上下文的内容，可选出risk，have a risk of 意为“有…的风险”。答案为E) risk。本句意为“研究结果表明夜班工作的人患帕金森病的风险较小。”
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大学英语四级

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