题目选项分析

The order Rodentia, consisting of over 2,000 species constituting over 40% of all mammalian species, varies in size from the massive Capybara to their smallest member, the African pygmy mouse.

The order Rodentia, consisting of over 2,000 species constituting over 40% of all mammalian species, varies in size from the massive Capybara to its smallest member, the African pygmy mouse.