【英语时差8,16】前额皮质（下）

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

【英语时差8,16】什么是视差和如何计算它（上）

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

【英语时差8,16】前额皮质（上）

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

【英语时差8,16】蜗牛（下）

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.

【英语时差8,16】蜗牛（中）

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

【英语时差8,16】Henry VIII 英国国王亨利八世

In 1509 Henry VIII ascended the throne.He would be King of England until his death. Author Alison Weir wrote the book, Henry VIII: The King and Court and here are some extracts from it. Henry VIII succeeded to the throne in 1509 to great acclaim. He

【英语时差8,16】洛杉矶

If youve ever driven in LA, you know that people dont cooperate terribly well. Traffic jams, folks cutting folks off, people shouting at you out their windows . . . its a real headache. Wed all do a lot betterat least, wed all move through congestion

【英语时差8,16】蜗牛（上）

No matter the species, mating rituals are pretty weird. Take the praying mantis. After an intimate tryst, the female mantis bites its partners head off. But when it comes to sexual hijinks, nothing beats the garden snail. During sex, garden snails of

【英语时差8,16】怎样计算狗的年龄（上）

Dogs do have much shorter life spans than we humans do. In an attempt to gauge our pets stage in life in a way we can relate to, we often use the popular myth of multiplying their age by seven. One problem with the formula is that it doesnt consider

【英语时差8,16】流星体

In his book Cosmos, the late scientist Carl Sagan talks about the way in which the earth is regularly struck by material from outer space. These collisions with space debris can be minoras in a shooting star on a summer nightor amazingly destructive,

【英语时差8,16】影响球体着地因素

Without the search for mates or the ensuing courtship rituals, parthenogenesis means big savings in time and energy: in just one season, a single aphid can give rise to billions of descendants.But in the fall, fresh food gets harder to find and there

【英语时差8,16】嘻哈音乐助改善中风（上）

Stroke is the number one cause of adult disability. But it doesnt have to be that way. In fact, if someone having a stroke gets to the hospital in time, drugs used to break up the blood clot in the brain thats causing the stroke can prevent much of t

【英语时差8,16】湿沙为什么黏在一起？（上）

At the end of the day, just before going to bed, you go through the house to do an energy check.You make sure all the lights are off, the oven is cold, the iron is unplugged. So now youve done your duty as a good energy conserver, right? Not so fast.

【英语时差8,16】网上娱乐-上

Diarmuid: Hi Im Diarmuid. Todays topic is online entertainment. Yang Li: What can you do on the internet to while away your time? Diarmuid: And what are the advantages and disadvantages? Yang Li:We start with our interview with a group of students at

【英语时差8,16】赚钱的清闲差事-上

Is it ever too cold to exercise? During those cold winter months, it sometimes seems too chilly to run or jog. What if your lungs freeze? Well actually, your body is designed so that by the time air reaches your lungs, its been warmed up and moisturi

【英语时差8,16】对口型演唱 -上

D:Oh, no,Y,it's starting to rain, and i left my ant farm outside, now my ants will drown and die. Y:Come on,D,i'm guessing plenty of ants drown every time it rains,which makes me wonder how do groud-nesting ants cope with rain? D:Actually, ant specie

【英语时差8,16】言语错误-上

What do brain damaged patients, adults saying tongue twisters and all children have in common? Theyre more likely to make speech errors than an adult who is speaking under normal circumstances.In this moment of science, we'll look at why. ' A common

【英语时差8,16】对口型演唱 -下

A: My favourite band were on TV last night but they just lip-synced the songs. B: Oh I hate it when they do that. A: It must be hard for stars to sing and do complicated dance routines at the same time. B: I suppose that's why so many of them lip-syn

【英语时差8,16】搭讪 -上

Diarmuid: No... that's no good. Oh, no that's even worse. Jean: Hi Diarmuid, what are you up to? Diarmuid: Hello Jean. I'm trying to think of some chat up lines. Jean: Chat up lines? How is single life going? Diarmuid: Terrible. I just can't seem to

【英语时差8,16】公平竞争 -上

William: Hello I'm William Kremer. Feifei: I'm Feifei. What's today's word, William? William: Well there's a footballing theme to this week's question, or at least a sporting theme. Let me ask you, Feifei, what characteristics do you associate with B