更多"Walk a Quarter-Mile or Die
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[单项选择]Walk a Quarter-Mile or Die
If you can walk a quarter-mile,odds(可能性)are you have at least six years of life left in you,scientists say.And the faster you can(51)it,the longer you might live.
While walking is no guarantee of(52)or longevity(长寿),a new study found that the ability of elderly people to do the quarter-mile was an“important determinant(决定因素)”in whether or not they’d be(53)six years later and how much illness and disability they would endure.
“The(54)to complete this walk was a powerful predictor of health outcomes,”said study leader Anne Newman of the University of Pittsburgh School of Medicine.“In fact,we(55)that the people who could not complete the walk were(56)an extremely high risk of later disability and death.”
Newman and colleagues recruited nearly 2,700 white and African-American men and women aged 70 to 79 to(57)the walk.All the participants were screened and determined to be in relatively(58)health,and they had all said they had previously walked th
A. take
B. do
C. jump
D. run
[单项选择]A Bad Idea
Think you can walk, drive, take phone calls, e-mail and listen to music at the same time Well, New York’s new law says you can’t._______(46) The law went into force last month, following research and a shocking number of accidents that involved people using electronic gadgets (小巧机械) when crossing the street.
Who’s to blame _______ (47) "We are under the impression that our brain can do more than it often can," says Rene Marois, a neuroscientist (神经科学家) in Tennessee. "But a core limitation is the inability to concentrate on two things at once."
The young people are often considered the great multi-taskers. _______ (48) A group of 18- to 21-year-olds and a group of 35- to 39-year-olds were given 90 seconds to translate images into numbers, using a sample code. _______ (49) But when both groups were interrupted by a phone call or an instant message, the older group matched the younger group in speed and accuracy.
It is difficult to measure the productivity lost by m
