It is impossible to lick your elbow1.
A crocodile can't stick its tongue out.
A shrimp's2 heart is in its head.
When you sneeze, your heart stops for a millisecond.
In a study of 200,000 ostriches3 over a period of 80 years, no one reported a single case where an ostrich buried its head in the sand.
It is physically impossible for pigs to look up into the sky.
If you sneeze very hard, you can fracture4 a rib. If you try to suppress a sneeze, you can rupture5 a blood vessel6 in your head or neck and die. If you keep your eyes open by force, they will pop out7.
Rats multiply so quickly that in 18 months, two rats could have over a million descendants8.
Wearing headphones for just an hour will increase the bacteria9 in your ears by 700 times.
The cigarette lighter was invented before the match.
A duck's quack10 doesn't echo, and no one knows why.
Like fingerprints, everyone's tongue print is different.
I bet you tried to lick your elbow!!!!!
你不可能舔到自己的肘部。
鳄鱼的舌头伸不出来。
小虾的心脏在其头部。
打喷嚏的时候，你的心脏停止跳动1毫秒。
在一项历时80年、对2万只鸵鸟的研究中，没有人报导过一次鸵鸟将头埋在沙里的案例。
从生理上讲，猪不可能抬头看到天空。
如果你用力打喷嚏，你可能会折断肋骨；如果你试图抑制打喷嚏，可能会弄破头部或颈部的血管而死亡；如果你用力睁眼睛，眼球会突出来。
老鼠繁殖速度很快，在18个月的时间里，两只老鼠就会有1 百万多只后代。
头戴耳机仅仅1小时就会使耳朵中的细菌数量增加700倍。
打火机是在火柴之前发明的。
鸭子的叫声没有回音，没有人知道为什么。
像指纹一样，各人的舌纹也各不相同。
我敢打赌你尝试舔你的肘部了！
1. elbow n. 肘部
2. shrimp n. 小虾
3. ostrich n. 鸵鸟
4. fracture v. 折断
5. rupture v. 使…裂开
6. vessel n. 脉管
7. pop out 突出
8. descendant n. 子孙，后代
9. bacteria n. 细菌
10. quack n. （鸭子）呷呷叫声