李國勤

1. Your stomach has to produce a new layer of mucus every two weeks， otherwise it will digest itself. 為了防止把自己消化掉，你的胃不得不每兩周就造出一層新的粘膜。

2. Owls are the only birds that can see the colour blue. 貓頭鷹是唯一能看見藍(lán)色的鳥類。

3. You spend about 23 years sleeping in a 70-year life. 在70年的生命中，你大約要花23年的時(shí)間睡覺。

4. People will say “Bless you” when you sneeze because your heart stops for a millisecond. 當(dāng)你打噴嚏時(shí)，人們會(huì)說“上帝保佑你”，是因?yàn)槟愕男呐K停跳了一毫秒。

5. A cat has 32 muscles in each ear. 貓的每只耳朵上有32塊肌肉。

6. All polar bears are left-handed. 所有的北極熊都是左撇子。

7. Butterflies taste with their feet. 蝴蝶用腳品嘗味道。

8. An average head has between 100，000—150，000 hairs. 人們頭上通常有10萬到15萬根頭發(fā)。

9. Hair on your head grows at 10—13 mm per month. 你的頭發(fā)每月會(huì)長10—13毫米。

10. Nails grow at 3 mm per month. 指甲每個(gè)月會(huì)長3毫米。