56.If you are interested in rock formations, which activities are the best choices?  

56If you are interested in rock formations, which activities are the best choices?

       ACaves and Fossils                    BFossils and Manners

       CCaves, and Exploring Caves            DExploring Caves and Manners

57If you are members' friends, what benefits can you receive?

       ATwo free lectures every month

       BA membership card and certificate

       CFavourable price for Youth Camp

       DTwo free tickets to Echo Cove Cave

58The purpose of this poster is to invite more people to ______

       Ajoin the Cave Club                       Benjoy the underground world

       Cwork as volunteers,                    Dprotect the educational caves

答案

CDA

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