阅读短文，选择正确答案。
Elephants can live 50 to 60 years. They are the largest land animals. They can hear and smell very well. They like water very much. They eat a lot one day.
Snakes haven't got legs or feet. They put out their tongues(舌头) to smell the air. They love the sun. They sleep in winter if they live in cold places.
1．Elephants can ________ very well. ( )
2．Elephants are the largest animals ________. ( )
| A．on earth | B．on land | C．in the world |
3．Snakes haven't got ________. ( )
4．Snakes use their ________ to smell the air. ( )
5．________ snakes live in cold places. ( )
B. 
C. 
D. 
E. 
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