问题
单项选择题
Multiple ChoiceThe history of the U.S. is generally agreed to have begun in （）
A.1620
B.1607
C.1776
答案
参考答案：B
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Multiple ChoiceThe history of the U.S. is generally agreed to have begun in （）
A.1620
B.1607
C.1776
参考答案：B