同学们，这些趣事你都知道多少呢？

1. Your stomach has to produce a new layer of mucus every two weeks otherwise it will digest itself.

为了防止把自己消化掉，你的胃不得不每隔两周就造出一层新的粘膜。

2. Owls are the only birds that can see the colour blue.

猫头鹰是唯一能看见蓝色的鸟类。

3. You spend about 23 years sleeping in a 70 year life.

在 70年的生命中，你大约要花 23年的时间睡觉。

4. People will say" Bless you" when you sneeze because your heart stops for a millisecond.

当你打喷嚏时，人们会说“上帝保佑你”，那是因为你的心脏停跳了一毫秒。

6. Pigs can become alcoholic.

猪有变成酒鬼的能力。

7. A cat has 32 muscles in each ear.

猫的每只耳朵上有 32块肌肉。

8. All polar bears are left-handed.

所有的北极熊都是左撇子。

9. Butterflies taste with their feet.

蝴蝶用脚品尝味道。

10. Bats use ultrasound to pick up vibrations from their prey.

蝙蝠用超声波识别猎物发出的震动。

11. An average head has between 100,000-150,000 hairs.

人们头上通常有 10万到 15万根头发。

12. Hair on your head grows at 10-13 mm per month.

你的头发每个月会长 10至 13毫米。

13. Nails grow at 3 mm per month.

指甲每个月会长 3毫米。

14. In our solar system, the earth is the lucky planet that has the right temperature to recycle water.

在太阳系中地球是个幸运的星球，因为它有适宜的温度可以使水再循环。