Mr Brown has got a dog．Its name is Ben．And the dog is very good to Mr Brown．

    One hot day,Mr Brown returns home from work．"I want to know where the water jar(罐子)is．"Then he finds the water jar with clean water．Mr Brown wants to drink some water．But the dog barks(吠叫)．

    "Oh．Ben!Please be quiet!I will give you some water．"But the dog doesn't stop barking and even jumps up to him．"What?Let me drink some water first．Then I will give you something to eat．"But the dog doesn't stop barking．And the dog still jumps up and even breaks the jar at last．Mr Brown gets angry(生气的)．But soon，he finds a snake (蛇) in the pieces of the jar．He knows about the snake．It ispoisonous． It can be very dangerous for him to drink the water.Brown thanks the dog a lot．

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