Everyone knows that caffeine keeps a person up all night. But for some people, caffeine is the doctors order for good, or the better word may be safe, sleep. Sleep apnea, a sleep disorder in which a persons breathing periodically stops for brief peri

发表于:2019-03-06 / 阅读(217) / 评论(0)

英语时差8，16

【英语时差8,16】蛇的第六感：犁鼻系统 -下

Although snakes often have very sharp vision, a sense of smell, and a sensitivity to heat, their most important sensory system is one that we humans dont share with them at all. This sixth sense is called the vomeronasal system, and the sense organs

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英语时差8，16

【英语时差8,16】蛇的第六感：犁鼻系统 -上

A foraging squirrel comes into range of a hungry, coiled rattlesnake. The squirrel realizes the danger too late-the rattlesnake strikes out and bites, fangs pumping venom deep into the squirrels small body. The poison doesnt kill immediately, but the

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英语时差8，16

【英语时差8,16】为何蛇类舌头分叉-下

The key here-with both ears and eyes-is that your brain combines two different perspectives to make a more detailed, three-dimensional whole. Because you have two separate eyes and two separate ears, you can see and hear in stereo. When a snakes tong

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英语时差8，16

【英语时差8,16】为何蛇类舌头分叉-上

Why do snakes have forked tongues? And why do they flick them? Is it because snakes are naturally deceitful, ready to whisper lies into passing ears? Actually, its to aid a snakes vomeronasal system-a sensory system in snakes that is akin to smell. S

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英语时差8，16

【英语时差8,16】了解暖水瓶的工作原理-下

Whats A Good Insulator? How about air? Air is, in fact, a pretty good insulator, which is why styrofoam keeps things hot. Its full of air. But even better than that would be a vacuum. Because theres nothing in it to heat up, heat cant conduct through

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英语时差8，16

【英语时差8,16】夜生活之：去夜总会跳舞 -中

The thing I think I like the most about clubbing for me, is when you walk into a club, you leave your ego at the door. Everyone is there to have a good time, everyone shares a similar interest in the music. When you're walking down the street in Lond

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英语时差8，16

【英语时差8,16】夜生活之：去夜总会跳舞 -上

Andrea: There's house music and heavy metal... And then there's really well-known clubs like Ministry of Sound... Today we're finding out about clubbing - whether it's in London or elsewhere in Britain. Hello. I'm Andrea. We've been finding out what

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英语时差8，16

【英语时差8,16】英国美国大不同-上

William: One thing that British people always say... Joe: Yeah. William: When we got to America, is we always say, Everything's so much bigger. Like... the streets are bigger, cars are bigger, refrigerators are bigger, washing machines are bigger. Wh

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英语时差8，16

【英语时差8,16】网上娱乐-中

Diarmuid: Next we talked to a Greg Ros. He said that online gaming provides a much cheaper form of entertainment. Greg: If we think about entertainment and look at that compared to the spectrum of entertainment the standard things that you see out th

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英语时差8，16

【英语时差8,16】冰激凌融化：热传导 -上

Live a single day on planet Earth, or anywhere else in the universe for that matter, and you will experience the natural phenomenon of heat conduction, which is the term used to describe the natural flow of heat from warmer objects to cooler ones. Yo

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英语时差8，16

【英语时差8,16】难缠新娘 -上

Jean: Hello everybody and welcome to another Authentic Real English from BBC Learning English with me Jean. Diarmuid: And me Diarmuid. Jean: So, what are we going to talk about today Diarmuid? Diarmuid: I want to talk about my sister's wedding. Jean:

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英语时差8，16

【英语时差8,16】难缠新娘 -下

Diarmuid: It's a combination of the words bride... And Godzilla. She's telling everyone what to do. She's demanding that everything is perfect for her big day. And if she doesn't get what she wants, she gets really upset. Jean: What a nightmare! A: I

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英语时差8，16

【英语时差8,16】水墙形成时会发生什么呢-上

Next time youre sitting in the tub, try the following experiment. Stand up quickly, being careful not to fall over. The water will slosh over to fill in the place where your body was, and then slosh back in the other direction, and so on. You have cr

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英语时差8，16

【英语时差8,16】水墙形成时会发生什么呢-下

Heres How..In a lake, cold water sinks to the bottom, forming a distinct layer underneath the warmer water on top. Wind blows across the top layer. This causes more of that warm layer to build up on one end of the lake, pushing the cold layer underne

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英语时差8，16

【英语时差8,16】蓝莓提升记忆？-下

Scientists arent certain. But it may have to do with the fruits abundance of phytochemicalsanti inflammatory substances that also act as antioxidants. In animal studies, chemicals in blueberries boosted activity in parts of the brain associated with

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英语时差8，16

【英语时差8,16】用食物引诱来结束孩子的哭闹？-下

Why? Because, according to the study, it could create a link between eating and comfort in kids prone to anger. Its well known that adults who associate food with comfort are more likely to be obese. The same mechanism might affect kids. Now, obesity

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英语时差8，16

【英语时差8,16】用食物引诱来结束孩子的哭闹？-上

Say youre out somewhere with your kid, and hes having a meltdown. Crying, screaming, kicking-you name it. Desperate, you spot a vending machine and promise the little troublemaker a treat if hell settle down. A chocolate bar or two later, your child

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英语时差8，16

【英语时差8,16】阿瑟克拉克与静止卫星 -上

Some of the best devices in science have been anticipated by science fiction writers years before they existed. Occasionally a writer comes up with an idea that can be put into practice within their lifetime! Such is the case with the geostationary s

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英语时差8，16

【英语时差8,16】英国：苏格兰 -中

Plucks, lights, fat, oats, spice and the whole lot encased in a sheep's stomach. Andrea: Did you hear some of those ingredients, Jean? Apparently they are heart, liver and lungs of the sheep. The other ingredients in the dish are fat, oats and spice.

发表于:2019-03-06 / 阅读(326) / 评论(0)

英语时差8，16