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标题: 六级练习2016.04.09 [打印本页]

作者: Rebecca949    时间: 2016-4-12 11:31     标题: 六级练习2016.04.09

[audio]http://sound.yywz123.com/tingbbs/cet6/cet620160409.mp3[/audio]



Getting a flu shot can help prevent influenza. But now, a large study in Britain indicates that older adults who get an annual flu vaccination are less likely to suffer a heart attack. (1)_________________________________, age 40 and older. Researcher Niroshan Siriwardena of Britain's University of Lincoln led the study.
"Our research suggests that flu shots are associated with a reduction in relative risk of heart attack in adults by about 19%." (2)_________________________________. The results were mathematically adjusted to reflect the fact that (3)_________________________________ are more likely to get a flu shot.




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作者: oralex    时间: 2016-9-23 15:51

The study involved more than 78000 people
The reduction was even higher 21% for people who got vastination earlier in the flu season
people are higher risk of heart attack in the first place




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