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they，die，repeat，hour，quick，wash，run，encourage，find，hit，although，human

The Australian crocodile （鱷魚） is the largest crocodile in the world．It can grow up to seven meters long and the biggest can weigh up to 1，000 kilos．
What makes crocodiles dangerous is that they attack （攻擊） very（1）

quickly

quickly

．They take animals or people into water and kill（2）

them

them

．They usually attack in the water，but they can suddenly come out of a river and attack animals or people，and they can（3）

run

run

about 17 kilometers in an hour on land．
Every year in Australia there are crocodile attacks on（4）

humans

humans

．Two years ago a 24-year-old German tourist（5）

died

died

when she went for a swim in a lake．（6）

Although

Although

there were signs warning people that there might be crocodiles，the girl and her friends decided to swim in the middle of the night．The girl suddenly disappeared and the next morning her body was（7）

found

found

．Near it was a four-meter crocodile．And only last month two Australian boys watched in fear as their friend was killed by a crocodile．They were（8）

washing

washing

their mountain bikes in a river at that time．Then，those two boys climbed a tree and stayed there for 22（9）

hours

hours

while the crocodile waited below．
But you can survive （幸存） a crocodile attack．Last year a 19-year-old boy was saved from a crocodile when his aunt（10）

hit

hit

it on the nose．Norman's aunt said，"I hit it and I shouted，'Help!'The crocodile suddenly opened its mouth and stopped attacking．"