19.Early zoos around the world
TimePurpose
in Egyptover(16)4.500 years ago years agofor (17)the fun of the rich.
in (18)in Chinaabout 3,000years ago
in ancient Greek◆to(19)Study animal and plant life
◆for(20)to receive education

分析

解答 16.4.500 years ago
17.the fun                      18.in China             19.Study                20.the (Greek) students

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