听写：[scientific American 60 second science] &mp3

gritcellUID：2298420

第一篇，在搂主的基础上作些改动，有些地方听了很多遍还是听不清

This is scientific American 60 second science. I’m Kevin Bigus. Got a minute?Doctors have long struggled to diagnose and treat eating disorders in part because sufferers can be so secret about their behavior. But just like looking at the winds can show the life of the tree, the researchers from Bergus Yong University have found that testing only a few strands of a person’s hair can reveal changes in eating habit. They use mass bigtromatry to indenify tiny differences in ways of carbon and nitrogen isotopes. The changes occur in one isotope when people sharply reduce intake of foods like meat and milk and another when the body actually begins to starve. The test, which needs only five strands of hair, predicted with 80% accuracy, whether a person has anorexia, or bulimia. Some day, it may also help monitor relapses, since the changes in hair can show up only a weak after changes in diet. Up until now, doctors and researchers have had to relied heavily on communications with patients, who are often unable, or unwilling to acknowledge the problem. The new hair test can provide an object to biological way to diagnose eating disorders.Thanks for the minute, for the scientific American 60 second science. I’m Kevin Bigus.

[ 本帖最后由 gritcell 于 2007-2-1 15:01 编辑 ]

gritcellUID：2298420

第二篇，相对第一篇好像容易些，只有些小词上的变动，还有一个地方听不明白

This is scientific American 60 second science. I'm Steve Mursky. Got a minute?
To paraphrase deam warmer for animals' house, cold and hungry has no way to go through the life sun. Nevertheless numerous
animal studies have shown that hunger, in the form of calory restriction appears to extend life span. Now comes the research
published in the journal Science that suggests that being somewhat cold all the time may also lead to longer life even without calory
cutting. So you can have your cake but you'll be shivering while you eating it, too. Calory restriction is known to be accompanied by decrease in core body temperature, so researchers wanted to know wether the coolness were a factor in life extention. The
scientists developd the mouseline with some brain activity changes that caused the mice to have a body temperature about
half a degree southyears（听不出是什么） lower than normal. The mice were allowed to eat all the wanted and the male still live 12% longer than normal while
females hanged on for 20%than average life. Hey, if you do calory restriction and some future cold there be, at least you should be
confident that your life will sure seems longer.
Thanks for the minute, for the scientific American 60 second science. I'm Steve Mursky.

gritcellUID：2298420

http://www.iciba.com/search?s=sliper&x=54&y=13金山词霸在线，试试按拼音猜词（红字部分听不出来）

This is scientific American 60 second science. I'm Steve Mursky. Got a minute?
It's long been know that drinking a lot of alcohol is associated with the increase risk of cancer of the larin South Africa of ral catling. The alcohol itself however isn't to blame. A new study provide the first direct molecular evidence that cooperate is the chemical acetaldehyde produced from body breaks down the alcohol. the report appears in a new issue of chemical research of toxicology. The key part of the research involves the enzyme called the aldehy- dehydrogenase which breaks down the acetaldehyde. Some people naturally have very low levels of this enzyme and high levels of acetaldehyde . This phenomena is common in Asian population, and A study was done in Japan with 44 alcoholists. Some showed high level of acetaldehyde, although these patients were still cancer-free, Analysis of their DNA shows that they had specific genetic damage seen in the cancers that go without alcohol. Understanding the relationship between the genetics of alcohol metabolism and risks of cancer should lead to future deventions to lower the cancer risk for alcoholist and its anti- totallest alike. Thanks for the minute, for scientifc American 60 second science. I'm Steve Mursky.

[ 本帖最后由 gritcell 于 2007-2-2 17:28 编辑 ]

gritcellUID：2298420

If you have children, or if you ever had any contact with children, this is probably your familiar sound. When babies turn on the water works, you may wonder why they are crying, but scientists in Ohio State University wondered what their tears are made of. The answer is surprising. It turns out that the tear drops have three distinct layers. The salty substances we usually associated with crying form the bulk of the tear, but this layer of salt water was actually a sandwich between an inner layer of mucus and outer layer of oily fat. Every time you blink, the fatty layer spreads out to crash your eyeballs. This ugly oil slip protects people by sealing the water in Mucus layers against the surface of your eyes, keeping them nice and moist. The oily layers also contains a type of fat called Oleomaid(not sure) that was first identified in the brain where it helps to induce sleep. Although the Oleomaid in tears doesn't bring on diseases,the researchers don't yet know what it's doing, but they will aim to find it out. So now know what tears are made of. If you could only figure out how to get them to stop before they make you join in.