In 1979, there was an incident at a nuclear power plant on Three Mile Island, in Pennsylvania, when radioactive steam leaked into the open air. Nobody was hurt, although thousands of people fled the area. Seven years later, a much worse accident happ
According to the 2009 update of an MIT study first published in 2003, nuclear power plants in the United States have become more reliable and significantly safer. For one thing, nuclear plant operators now receive better and more rigorous training. A
Although audio tapes and video tapes look different, theyre based on the same principles. Each has a roll of magnetic material which slides past the so-called playback head in the VCR or cassette deck (cassette decks have one playback head, VCRs have
Unfortunately, theres no quick and easy way to dry up a toddlers runny nose. Although anti-histamines may stop the drainage, they can also clog up the nose and keep the mucus from draining away germs. A runny nose can become a sign of a more serious
Depending on the species, bird eggs can be any color ranging from chickens plain white to a robins blue, streaked, spotted, bright, pale, and anything in between. Today, on a Moment of Science, we take a look at some of the reasons this might be the
But heres a mystery: When you press pause on the VCR, the screen doesnt go blank. Instead, you get a frozen image. Remember, you need a changing magnetic signal to create even a still video image. If the video tape isnt moving, where is this changing
Do cats eat spiders? Our answer? Yes, they do. And thats not all cats will eat. Cats, both domestic and wild, are obligatory carnivores, meaning that they dont have the chemical tools in their bodies to access nutrients from plants. So they have to e
Additionally, Muslims must believe in the prophets, many of whom are responsible for bringing Allahs revelations to man. Among the prophets are the Prophet Muhammad, Jesus and Moses. Resurrection and a day of judgment, which are crucial to the Christ
For many scientists, a species success is measured by sheer numbers. In that case, the most successful species known to man is a type of bacterium known as S-A-R-11, or SAR-11 for short. Scientists estimate that there are two-hundred and forty times
You may already know that chocolate can be lethal to your pet, but did you know that onions can be toxic to your cats and dogs too? And Im not just talking about their breath. You say all forms of onionscooked, raw, dehydratedcontain contain sulfur c
Tips: complimentary 称赞的 cheers (英国口语)谢谢 ill-mannered 不讲礼貌的 disrespectful 不尊重他人的 split families 破裂的家庭 role models 榜样 Manners 文明礼貌 Good day.Nice to meet you.Pardon? I guess some people d
However, the observation that morphine can decrease social behaviors as well prompted scientists to investigate the connection between the opioid system and social relationships. They compared normal baby mice to baby mice lacking a crucial opioid re
Sometimes its easy to understand how an evolutionary change took place, but its more difficult to understand why. For example, consider the beautiful birds of paradise which live in the forests of New Guinea. The males of many bird-of-paradise specie
William: In terms of cultural differences Joe, I mean like there are lots and lots of cultural differences aren't there between the UK and the States... Joe: Yeah. I think it was Bill Bryson who said that Americans live like they're never going to di
Now, even small dogs are genetically programmed to function like predators, which makes sense considering they are close relatives of wolves. And birdsyou can probably figure out why the only way youd find out your bird is sick is when it dies. The s
Scientists conducted a range of cognitive tests with older adults in their 60s and 70s. They then chose two smaller groups from those subjectsthose who performed high on the tests, and those who performed low. The scientists administered two of the s
Parallax is a phenomenon by which we can judge the distance to things just by looking at them. Astronomers use parallax to calculate the distance to stars. Do you need a gigantic computer-based observatory to use it? Not at all. Your finger will do n
The prefrontal cortex is the region of the brain located just behind the forehead. This is where higher-level cognition occurs, such as recalling whether a word was heard aloud or read. Most people show evidence of more processing on one side of the
Although snails can and do successfully mate without stabbing each other, studies have shown that darted snails store one-hundred-sixteen percent more sperm than undarted snails.
Now heres the strange part. About once a week, as garden snails share caresses, pressure builds up in the area surrounding a sac near the genital region housing a calcium dart. Just for the moment of sexual penetration, the impregnating snail stabs i
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- 赖世雄旅游观光英语通 第30期:租自行车
- 赖世雄旅游观光英语通 第16期:证照查验 Immigration
- 赖世雄旅游观光英语通 第17期:过关 Customs
- 赖世雄旅游观光英语通 第18期:服务台 Information Desk
- 赖世雄旅游观光英语通 第39期:最后一顿早餐
- 赖世雄旅游观光英语通 第32期:林布兰博物馆
- 赖世雄旅游观光英语通 第33期:鹿特丹
- 赖世雄旅游观光英语通 第34期:海牙
- 赖世雄旅游观光英语通 第36期:在公园
- 赖世雄旅游观光英语通 第37期:足球场
- 赖世雄旅游观光英语通 第38期:整理行囊
- 赖世雄旅游观光英语通 第40期:办理退房
- 赖世雄旅游观光英语通 第41期:平坦大地
- 赖世雄旅游观光英语通 第42期:停车加油
- 赖世雄旅游观光英语通 第43期:使用道路地图
- 赖世雄旅游观光英语通 第44期:更换爆胎
- 赖世雄旅游观光英语通 第45期:完美的野餐地点
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- 赖世雄旅游观光英语通 第35期:堤防
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