阅读以下材料，回答题。According to this passage, turtles are of great importance -考呗网

单选题阅读以下材料，回答题。

According to this passage, turtles are of great importance in China because they are____________

1The noun phrase "the medicine" underlined in Paragraph 1 refers to the____________

2Turtles are well-known throughout the world for reasons EXCEPT its____________

3"The turtle --long with a few other Cuora species -- was once imported into China by the pet trade．" in Paragraph 1 means____________