No one knows for certain how the first Americans arrived in _____ is now the Uni

题干

No one knows for certain how the first Americans arrived in _____ is now the United States.

A．which	B．what
C．where	D．why

上一题下一题 0.64难度单项选择更新时间:2015-03-10 08:27:15

小学学科试题库

初中学科试题库

高中学科试题库