27．閱讀短文，從方框中選擇恰當(dāng)?shù)脑~并用其適當(dāng)形式填空，使短文完整、通順．每詞限用一次，其中有兩個(gè)是多余的．
| they，die，repeat，hour，quick，wash，run，encourage，find，hit，although，human |
The Australian crocodile （鱷魚(yú)） 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）
．They take animals or people into water and kill（2）
．They usually attack in the water，but they can suddenly come out of a river and attack animals or people，and they can（3）
about 17 kilometers in an hour on land．
Every year in Australia there are crocodile attacks on（4）
．Two years ago a 24-year-old German tourist（5）
when she went for a swim in a lake．（6）
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）
．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）
their mountain bikes in a river at that time．Then，those two boys climbed a tree and stayed there for 22（9）
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）
it on the nose．Norman's aunt said，"I hit it and I shouted，'Help!'The crocodile suddenly opened its mouth and stopped attacking．"
