文章列表

• 1.【英语时差8,16】猫咪的咕噜声（上）
• Scratch a friendly cat behind the ears and shes likely to reward you with a deep purring. Have you ever wondered exactly how a cat makes this noise, a...
• 2.【英语时差8,16】辣椒为什么那么辣？（上）
• Bite into a hot pepper and it feels a lot like youve taken a sip of a hot drink. How can something thats not hot in temperature produce the same react...
• 3.【英语时差8,16】冰冷的24 Themis小行星（上）
• One of the most intriguing questions in science is where the earths oceans came from. Did the planet always have water? Or did it come from somewhere ...
• 4.【英语时差8,16】墨西哥跳豆为什么会跳跃？（下）
• Once the seed is gone, this larva has a peculiar fondness for leaping about inside the empty pod, making its new home jump and roll from place to plac...
• 5.【英语时差8,16】墨西哥跳豆为什么会跳跃（上）
• On the table in front of you, it looks like a small, dried bean. Pick it up. To your surprise, it starts to wiggle, shifting around nervously in your ...
• 6.【英语时差8,16】你能辨别珍珠的真假吗？（下）
• Pearls are rough because nacre is formed of hard, irregular crystals. At a microscopic level, these crystals make a series of irregular plates and rid...
• 7.【英语时差8,16】氢动力汽车车（下）
• The second challenge is that there are relatively few filling stations equipped with hydrogen pumps. According to The National Hydrogen Association, a...
• 8.【英语时差8,16】你能辨别珍珠的真假吗？（上）
• In your hand is a string of pearls. They look real enough, reflecting the light with a magnificent luster, but how can you be sure they arent fakes? S...
• 9.【英语时差8,16】饲养宠物有益身心（下）
• People with pets have been found to have lower cholesterol and triglyceride levels than people with no pets, even when matched for weight, diets, and ...
• 10.【英语时差8,16】从指间到手的细菌（下）
• But can a persons unique signature of hand bacteria be used to identify them, much like DNA? A handful of experiments say yes. For example, researcher...