时间:2019-01-08 作者:英语课 分类:Scientific American(十)月


英语课

You're in the supermarket, and a man collapses 1. He's gasping 2. It's CPR time. But wait, was it 20 compressions, two breaths, or 15 to every one breath? Can't remember? Well you may not have to. Because there’s hands-only CPR—pressing the chest fast and hard, about 100 times a minute, no mouth-to-mouth. And it saves at least as many lives as traditional CPR. That’s according to a study in the Journal of the American Medical Association.


Five years ago the state of Arizona, with lots of senior citizens, launched a campaign to educate its people about hands-only CPR. They hoped bystanders would stop panicking about breath-to-compression ratios—and touching 3 mouth to mouth—and possibly save more lives. It seems to have worked.


Looking at 4,400 cardiac arrest cases, researchers found that the rate of bystanders performing CPR shot up 50 percent. And the percentage of Arizonans surviving cardiac arrests went from 4 percent to 10. In fact, the odds 4 of surviving were actually better when cardiac arrest victims received hands-only CPR, compared to mouth-to-mouth. So if it's hero time, think "Stayin' Alive"—it’s got the right 100 beats per minute. Call 911. And start pumping.


 



折叠( collapse的第三人称单数 ); 倒塌; 崩溃; (尤指工作劳累后)坐下
  • This bridge table collapses. 这张桥牌桌子能折叠。
  • Once Russia collapses, the last chance to stop Hitler will be gone. 一旦俄国垮台,抑止希特勒的最后机会就没有了。
adj.动人的,使人感伤的
  • It was a touching sight.这是一幅动人的景象。
  • His letter was touching.他的信很感人。
n.让步,机率,可能性,比率;胜败优劣之别
  • The odds are 5 to 1 that she will win.她获胜的机会是五比一。
  • Do you know the odds of winning the lottery once?你知道赢得一次彩票的几率多大吗?
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2'-phosphodiesterase
a cutie pie
abnormal focal length
aggregation of individual preferences
air inlet valve of dredger's deliving pipeline
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Auberger blood group system
Banbayan Pt.
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be food for worms
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Brachypodium sylvaticum
calex
capon test
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catch copy
Central I.
chantha
chromophobic
couchful
day disk
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fermentation inhibitor
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half titles
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Higher bid
imperialls
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lead metasilicate
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Liberation Tigers of Tamil Eelam
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