文章列表

• 1.【英语时差8,16】中东为何石油丰富？（下）
• But if oil comes from ocean dwelling organisms, you may ask, why is so much of it concentrated in the dry, arid Middle East? Because, as you may have ...
• 2.【英语时差8,16】智商
• True or false: Walter is taller than Scott, and Scott's little brother is taller than Roger. Since Walter is not the tallest one of the four, then Sco...
• 3.【英语时差8,16】自杀生存战略
• Beneath the surface of a pond or stream it's a fish-eat-fish world, and the tiny minnow is often lunch for larger fish such as pike. You'd think a tas...
• 4.【英语时差8,16】中东为何石油丰富？（上）
• Its well known that when it comes to oil, the Middle East is king. Saudi Arabia has more than 260 billion barrels of proven reserves. Iran has 136 bil...
• 5.【英语时差8,16】人类活动导致企鹅数量减少（下）
• This decrease has led to reduced numbers of krill, the main source of food for some penguins, as well as for many of the fish species that penguins fe...
• 6.【英语时差8,16】饮食与大脑进化
• Don: Our development of larger brains had much to do with our evolution as a species. But the question is what fueled the development of those larger ...
• 7.【英语时差8,16】鸟类冰冷的脚和温暖的翅膀
• The world can be divided into two kinds of people: the ones who see a one legged seagull and feel a twinge of sympathy, and the ones who assume the ot...
• 8.【英语时差8,16】硬币可以叠多高？（下）
• This is a problem because a low center of gravity is more stable than a high one. Think how much easier it is to tip over a long two-by-four board bal...
• 9.【英语时差8,16】硬币可以叠多高？（上）
• Heres a question of burning scientific importance. How high can you stack pennies before they fall over? The answer? It depends. In a perfect universe...
• 10.【英语时差8,16】人类活动导致企鹅数量减少（上）
• Like the canaries that used to be brought into coal mines as early warning signals for toxic gases like methane, the worlds penguins are sounding an a...