题目 In the 1950s,researchers found that bus drivers were twice as likely to have heart attacks as bus conductors.Since then,dozens of studies have found links between sitting and a variety of illnesses,with a 2013 analysis of studies concluding: "Higher amounts of daily ...
1950s: The theory of the bottleneck is used to describe the process of attention. Scientists theorize that the many signals entering the central nervous system are placed in temporary storage and then are analyzed for their importance. In this way, a person can filter out what needs attention ...
With Alaska’s special vulnerabilities comes special attention. Nearly a year before the first COVID-19 case was identified in the U.S., the CDC’s Anchorage-based Arctic Investigations Program gathered experts in Fairbanks for a workshop to identify the most important emerging Alaska ...
In the 1940s and 1950s, these machines breathed for patients whose breathing had been either temporarily or permanently disabled by poliomyelitis. Once the most feared of childhood diseases because of its potential to cripple people for life, polio is now almost unknown in the United States. ...
I prefer the stories about the swimmers at the Beijing Olympics,one of which is about Zakia Nassar. She's a 21-year-old Palestinian __21__ Bethlehem studying dentistry in Jenin. Having had neither a __22__ nor a chance to an Olympic-sized pool in the past year, she had no choice ...