根据短文内容从方框中选择正确词的正确形式填空，每个词只用一次。将答案写在答题卡相应的位置上。(共10个小题，每个小题1分，满分10分）

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Not everyone can swim with fish in the ocean. But they can enjoy underwater life in another way-by visiting an aquarium.
There is a very large public aquarium in Atlanta, Georgia. The Georgia Aquarium says it is  小题1:in the world. It has more than one hundred thousand sea animals in thirty million liters of  小题2:. These include two whale sharks ---the   小题3: largest fish. And everyone seems to enjoy  小题4:huge public aquariums. They have opened around the world. Visiting an aquarium is a good way for children    小题5:about sea animals. They might even want to start an aquarium at home and join   小题6:of people keeping fish as pets around the world.
We do not really know when people began keeping fish as pets. But people have been interested in fish    小题7: a long time ago. Some say the Chinese kept and studied carp(鲤鱼) and goldfish more than one thousand years ago. The   小题8:Romans kept eels（鳝鱼) as pets . And the Greek philosopher Aristotle(亚里士多德) might be the 小题9:to study sea life, including sharks and dolphins.
Some people say that keeping fish at home in small water tanks called aquarium is very  小题10:today.