单选题 Formulated in 1823 ,the Monroe Doctrine asserted that, he Americas were no longer open to European colonization.

【正确答案】 A

【答案解析】辨义： A．emphatically stated强调指出；B．belligerently argued杀气腾腾地争辩，或“气势汹汹地抗争说”；C．accentuated加重语气地说，强调说；D．entreated恳求、哀求、央求。故正确答案为A。