SSS 2011-01-06
时间：2019-01-08 作者：英语课 分类：Scientific American(一)月
This is Scientific American’s 60-Second Science, I’m Cynthia Graber. This will just take a minute.
We produce tears in response to insults to the eyes—the sting of onion fumes 1, a tiny insect that flew into your cornea. But we also produce emotional tears. And it’s long been known that emotional tears are chemically different from poke-in-the-eye tears. Now researchers at the Weizmann Institute of Science in Israel find that women’s emotional tears have definite physiological 2 effects on men. The work appears in the journal Science. The researchers knew that mouse tears contain pheromones that convey information to other mice. So they looked for similar kinds of signals in human tears.
Two women volunteered to watch sad movies and have their tears collected. Twenty-four men were then asked to sniff 3 the movie tears or a saline solution. The men noted 4 no particular smell in either sample of salty water. But the men’s own body chemistry could tell the difference.
When the men looked at emotionally neutral images of women’s faces after sniffing 5 real tears, they reported less sexual attraction. The men also had lower levels of testosterone and less physiological arousal after smelling emotional tears compared with saline. Future studies will look at men’s tears, once researchers have collected enough videos of heartbreaking losses in big football games.
Thanks for the minute. For Scientific American’s 60-Second Science, I’m Cynthia Graber.
- The health of our children is being endangered by exhaust fumes. 我们孩子们的健康正受到排放出的废气的损害。
- Exhaust fumes are bad for your health. 废气对健康有害。
- He bought a physiological book.他买了一本生理学方面的书。
- Every individual has a physiological requirement for each nutrient.每个人对每种营养成分都有一种生理上的需要。
- The police used dogs to sniff out the criminals in their hiding - place.警察使用警犬查出了罪犯的藏身地点。
- When Munchie meets a dog on the beach, they sniff each other for a while.当麦奇在海滩上碰到另一条狗的时候，他们会彼此嗅一会儿。
- The local hotel is noted for its good table.当地的那家酒店以餐食精美而著称。
- Jim is noted for arriving late for work.吉姆上班迟到出了名。