pk10长龙统计走势图 北京赛车计划大全 北京赛车pk开奖视频app 北京pk10的玩法技巧 北京pk109码计划 中国福彩北京赛车官网 北京pk10微信群二维码 彩票控北京赛车走势图 北京赛车冷热杀号 pk10冠亚和值推荐号 北京pk10在哪看直播视频 北京赛车pk10下注 北京赛车超准计划 北京赛车pk10单期计划 北京赛车pk10冠军口诀

科学一刻》是印第安纳州大众传媒网的一个节目,英文名称是a moment of science。节目内容主要是科学小品文,科普性较强但简单易懂,旨在向大众宣传科学知识、体现时代科普要求、了解身边科学知识。

2015年《科学一刻》听力音频打包下载2018-03-16
VOA英语网提供的关于2015年《科学一刻》听力音频打包下载的资源.
大脑为何有那么多沟壑?2015-12-04
Dear A Moment of Science, I know the human brain is an incredible thing, the most complex object in the known universe. But, honestly, it’s not much to look at. Just a big, gray, foldy lump. And what’s with all those folds? Why does the brain look a lot like a scrunched up piece of paper?
我们为何要接吻?2015-11-09
People kiss for the simple reason that it feels good. Our lips are full of sensitive nerve endings, which activate sensory areas in the brain. Kissing boosts the levels of neurotransmitter substances such as dopamine, serotonin, and oxytocin.
蛋是如何成色的 How Eggs Get Their Color2015-11-08
Depending on the species, bird eggs can be any color ranging from chicken’s plain white to a robin’s blue, streaked, spotted, bright, pale, and anything in between.
生孩子为什么会疼痛难忍?Why Giving Birth Hurts2015-11-08
That infant head looks mighty large compared to that narrow birth canal. And to add to that, the baby comes out facing down and backwards, which means mothers can do little to assist the birth, or even to untangle the baby from the umbilical cord.
从科学角度来说什么是厌倦?2015-11-03
Dear A Moment of Science, Everyone gets bored from time to time. But I was wondering–what is boredom exactly, scientifically speaking?
冰河时代的植物存活?#36739;?#22312;2015-11-02
Like a science fiction time traveler, an arctic plant of the late Pleistocene age, over thirty one thousand years old, is growing again after a long frozen sleep.
什么是脑震荡 What Is A Concussion2015-11-02
If you follow football, hockey, soccer, or boxing, then you know that athletes in these and other contact sports are at constant risk for a concussion. Every season several football players miss a number of games after absorbing vicious blows to the head.
尼亚加拉大瀑布正在慢慢消失2015-11-01
Niagara Falls has been a famous honeymoon spot for over a hundred years: some honeymooners have been more faithful to it than to each other.
科学家如何研究致命的疾病2015-11-01
I have a trivia question for you, Don. What do the Ebola virus, anthrax, and the avian flu have in common?
水泡是什么?2015-10-31
Remember that hit song from the 80s that featured the chorus: And I would walk five hundred miles / and I would walk five hundred more / Just to be the man who walks a thousand miles / to fall down at your door? What sounds romantic in pop song fantasy would be painful in reality.
为?#20301;?#24418;成黑眼圈2015-10-31
It’s eleven o’clock Sunday morning, and you’ve just woken up after a late night of carousing. You stumble out of bed, brace yourself on the bathroom sink and blink into the mirror.
雪橇狗是什么品种?2015-10-30
In books and movies like Call of the Wild, huge, vicious huskies pull sleds for hundreds of miles over the Alaskan tundra. A Moment of Science wonders, what kind of dogs are sled dogs?
地心引力为何对我们有?#20040;?/a>2015-10-30
When astronauts return from long missions in space, their exit from the spacecraft is usually hidden from public view. This is because after several months in weightless conditions, things we usually take for granted, such as walking and keeping our balance, present great difficulties for the astronauts.
可爱的威力 The Power Of Cute2015-10-29
I’ve heard that owning a dog or cat can be a good way to deal with stress and ward off depression. So I was wondering–is it interacting with actual pets that’s beneficial, or would just looking at pictures of cats and dogs work to curb stress?
把牛奶从?#24378;?#21561;出来2015-10-29
Remember back in grade school sitting at the lunch table when someone cracked a joke just after you took a swig of milk? As you laughed milk spurted out your nose and sprayed everyone around you. Now that’s entertainment. But why does this happen?
蟑螂实际上有用吗?2015-10-28
For certain species of cockroach, humans make the perfect roommates. Why do cockroaches like living in our houses? And what do they do when they’re not bugging us?
什么引起你嗓子哽咽?What Causes A Lump In Your Throat?2015-10-28
What Causes A Lump In Your Throat? Oftentimes when we cry, we feel a lump in the throat. Does a lump actually form, or is there some other explanation?
下馆子怎样才能吃得少How To Eat Less When Dining Out2015-10-27
When it comes to losing weight, the trick lies not so much in what you eat but in how much you consume. After all, even if you stick to whole grains, fruits, and vegetables, it’s still possible to eat too much, resulting in weight gain.
?#39029;?#20174;何而来What Is Dust, And Where Does It Come From2015-10-27
If you wipe a finger across a household surface that hasn’t been cleaned in the last few days, chances are you’ll come into contact with dust. Look around and you’ll find the stuff everywhere, from the particles floating in a sunbeam to the fine layer of grime coating TV screens, bookshelves, and car dashboards.
喋喋不休的黑猩猩!!Chattering Chimps2015-10-26
We talk to our house pets all the time, but wouldn’t it be great if your cat could answer you in English?
指甲划过黑板?#32435;?#38899;为何令人讨厌2015-10-26
We’ll be kind–we won’t use any sound effects on today’s program. Instead, imagine your eighth-grade classroom, and your childhood nemesis creeping quietly to the chalkboard. He shapes his hand like a claw, grins evilly, and slowly, torturously, drags his fingernails down the chalkboard.
我们为什么要刷牙Why Do We Need To Brush Our Teeth2015-10-25
Humans may be no less a part of the animal kingdom than lions, tigers and bears, but certain things set us apart. For instance, although like our mammalian cousins we use teeth to bite and chew food, we’re the only animals that brush after every meal.
白金为何是白色的?What Makes White Gold White?2015-10-25
Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: it’s white.
为何斑马有条纹?Why Do Zebras Have Stripes2015-10-24
For many animals, camouflage is an important part of survival. A leopard’s spotted coat and a polar bear’s white fur help them blend into their respective environments. But a zebra’s bold stripes can’t help to disguise it in its natural habitat, the open plains of Africa.
 246    1 2 3 4 5 6 7 8 9 10 下一页 尾页

赞助商链接

pk10单式
pk10长龙统计走势图 北京赛车计划大全 北京赛车pk开奖视频app 北京pk10的玩法技巧 北京pk109码计划 中国福彩北京赛车官网 北京pk10微信群二维码 彩票控北京赛车走势图 北京赛车冷热杀号 pk10冠亚和值推荐号 北京pk10在哪看直播视频 北京赛车pk10下注 北京赛车超准计划 北京赛车pk10单期计划 北京赛车pk10冠军口诀
快船vs火箭全场录像回放 佛山开心假期旅行社 天津快乐十分计划app 糖果大陆在线客服 555棋牌通比牛牛技巧 魔术先生 浙江省20选5走势图 十三水大牌图片 爱乐透老时时彩