文章列表

• 1.【英语时差8,16】如何计算光速
• How fast does light travel? What could you do to find out? One natural thing to try is to have someone send some light your way and see how long it ta...
• 2.【英语时差8,16】鸟类荷尔蒙映射其生活策略2
• Researchers wondered if corticosteroid variability was somehow related to life strategies. Would birds like the short lived great Tit, which lays twel...
• 3.【英语时差8,16】鸟类荷尔蒙映射其生活策略
• In the race of life, some animals are hares, running at top speed, producing lots of young and dying quickly. Others are tortoises, maturing slowly, p...
• 4.【英语时差8,16】食物过敏
• Food Allergy A true food allergy has little to do with digestion instead, its an immune system response. Your body treats the food like a foreign inva...
• 5.【英语时差8,16】阿司匹林
• In the 1890s a young scientist, named Felix Hoffman, was looking for a cure for his fathers terrible arthritis. Hoffman noticed that acetylsalicylic a...
• 6.【英语时差8,16】空中舞蹈2
• A skydivers body is in a delicate balance. Gravity tugs her downward with a constant, relentless force, while air resistance pushes her upward. The fa...
• 7.【英语时差8,16】跳伞的科学依据2
• Why not? She has reached whats known as terminal velocity. This is when the upward push of air resistanceor the friction she experiences as she falls ...
• 8.【英语时差8,16】跳伞的科学依据
• Why would you want to jump out of a perfectly good airplane? Well, you get to the ground much faster, and the trip down is a whole lot more interestin...
• 9.【英语时差8,16】喝饮料与运动的共性2
• Dehydration is big problem in all the se sports because you dont feel like youre losing water. If you run or lift weights, the sweat acts as a psychol...
• 10.【英语时差8,16】喝饮料与运动的共性
• After a day of skiing, bicycling, or swimming, some people find they get headaches something like a hangover from drinking too much the night before. ...