Formulatedin1823,theMonroeDoctrineassertedthattheAmericaswerenolongeropentoEuropeancolonization.
A、emphaticallystatedBlue－green algae grow abundantly in salt marshes.
Urban renewal programs strive to upgrade areas that are becoming slums.
Formulated in 1823, the Monroe Doctrine asserted that the Americas were no longer open to European colonization.
A mythical(imaginary) creature, the dragon was believed to have lion's claws, scaly skin, and fiery breath.
Communication is one of the most important bonds that hold cultural systems together.
