Scientists believe native Americans arrived by crossing the land bridge that connected Siberia(西伯利亚)and more than 10,000 years ago.
A.this is Alaska | B.Alaska is now | C.is now Alaska | D.what is now Alaska |
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Scientists believe native Americans arrived by crossing the land bridge that connected Siberia(西伯利亚)and more than 10,000 years ago.
A.this is Alaska | B.Alaska is now | C.is now Alaska | D.what is now Alaska |
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