SSS 2011-05-19
时间：2018-12-24 作者：英语课 分类：Scientific American(五)月
This is Scientific American’s 60-Second Science. I’m Karen Hopkin. This will just take a minute.
It’s graduation season. And some scientists got to wondering whether the folks who shake hundreds of hands while passing out diplomas run the risk of coming away with a fistful of infectious 1 microbes, such as Staphylococcus aureus. Good news—turns out the risk of being passed a disease-causing bacterium 2 while pressing the flesh is pretty remote. That’s according to a study in the Journal of School Nursing.
The researchers swabbed the palms of 14 school officials before and after graduation. They found that before the ceremony, and even after a slathering of sanitizer, hands were home to plenty of nonharmful bacteria. On the infectious scorecard, one dean 3 brought Staph aureus to a commencement. Two others at a different ceremony walked away with it. And one of those samples came from a left hand, which didn’t participate in any of the meeting-or-greeting. So the math says that of more than 5,000 handshakes, just one may have passed along something less welcome than a sheepskin.
So if you’re graduating this spring, feel free to shake hands, while you wonder if the last person who wore that robe had anything contagious 4.
Thanks for the minute. For Scientific American’s 60-Second Science, I’m Karen Hopkin.
- Influenza is an infectious disease.流感是一种传染病。
- What an infectious laugh she has!她的笑声多么具有感染力啊！
- The bacterium possibly goes in the human body by the mouth.细菌可能通过口进入人体。
- A bacterium is identified as the cause for his duodenal ulcer.一种细菌被断定为造成他十二指肠溃疡的根源。
- The students much like the new dean.学生们很喜欢这位新系主任。
- Who is the dean of the Foreign Languages Department?外语系主任是谁？
- It's a highly contagious infection.这种病极易传染。
- He's got a contagious laugh.他的笑富有感染力。