文章列表

• 1.听力文摘：吃蔬菜的正确时间
• When a vegetable is growing, it protects itself from insects by producing chemical nutrients thatmake it taste bad or seem repellant to predators. 蔬...
• 2.听力文摘：为什么我还饿
• You've just snacked on rice cakes. 你刚刚吃完了一些米糕这类小点心， Why are you still hungry? 但是为什么你还是感觉饥饿呢？ That yummy feeling of being...
• 3.听力文摘：什么引起嗓子哽咽?
• Oftentimes when we cry, we feel a lump in the throat. 很多时候，当我们哭泣时，我们会感到哽咽。 Does alump actually form, or is there some other explan...
• 4.听力文摘：为什么昆虫的血是绿色的或是黄色的?
• You've probably heard someone use the phrase blood red,but have you ever wondered if all blood really is red? 你可能听到有些人这样说血红色，但是你是否...
• 5.听力文摘：什么动物和人类最像
• Once again we go to the mailbag. A listener writes: 我们又一次打开邮箱。一位听众写到: Dear A Moment of Science, Besides chimps, which animals do you t...
• 6.听力文摘：地平线有多远?
• Here's a neat question you may have never thought to ask. How far away is the horizon? 你可能从未思考过这个简单的问题，地平线有多远？ Think about it. ...
• 7.听力文摘：果汁该喝还是不该喝?
• Juice may be tasty, but it's not really that nutritious. 果汁也许好喝，但并不怎么营养。 While orange juice is an excellent source of vitamin, it doesn...
• 8.听力文摘：有信仰会感觉更好么?
• Whether or not a treatment for an illness or disorder works usually doesn't depend on whether we believe it will work. 对于疾病或内分泌失调的治疗方案...
• 9.听力文摘：为什么人类身上没有斑点或条纹?
• Have you ever wondered why we humans don't have spots or stripes? 你是否曾经好奇过为什么我们人类身上没有斑点或条纹？ Let me think,Humans and animals g...
• 10.听力文摘：狗是如何让成为人类最好的朋友的呢?
• We've all heard the phrase dog is man's best friend. 我们都听过这句话狗是人类最好的朋友。 But how did dogs get to be so friendly with humans? 但是为什...