A. 
B. 
C. 
D. 
Road signs tell people the right way. Turn right? Turn left? Or go ahead? But in fact, some signs are not only helpful but also interesting. And knowing the meanings of these signs will help you stay happy when traveling outside. Look at the following signs. Do you know their meanings?
250dollar fine（罚款）! Dogs are popular pets in Western countries. In the evening or at the weekend, people take their dogs out for a walk. When a dog shits on the road, the owner has to clean it up. If not, he/she will have to pay a $250 fine for it.
There are lovely bears in zoos. Some visitors like to feed them meat or bread. But this is very dangerous. If the bear catches you, he will cat you!
This road is dangerous. On the sign, a car is driving near a hill. And there is a monster（怪物） behind the hill. The monster is going to eat the car. This road sign tells drivers to be careful at this place.
Do not hurt them! On the sign, a mother duck is taking her children for a walk. Drivers should slow down at this place. They shouldn't hurt the ducks.
