CROCODILES We can find crocodiles in tropical parts of the world, for example Africa, South America and Northern Australia.

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问题                                   CROCODILES
   We can find crocodiles in tropical parts of the world, for example Africa, South America and Northern Australia.
   They spend most of the time 【C1】______  slow-moving water but they 【C2】______  move fast through the water and on land. You often see crocodiles together in large groups. They 【C3】______   everything they catch, 【C4】______   fish, birds and small animals. And sometimes they make a meal of large animals or even people.
   There are 【C5】______   than ten types of crocodile. They all have very sharp teeth. They often lose 【C6】______  teeth, but soon get new ones.
   Crocodiles are usually about 3.5 metres long, but some are much 【C7】______  Crocodiles live 【C8】______  a long time. The oldest one kept in a zoo was 66 years old.
【C6】______

选项 A、this
B、that
C、these

答案C

解析 teeth 为复数,只有these 符合要求。
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