[课 文 预 读] Ⅰ.课文理解 1.How did the first settlers arrive in California according to the passage? A.It's believed that they crossed the Bering Strait in the Arctic to America by means of a land bridge. B.It's believed that they arrived there with the help of the Europeans. C.It's believed that they arrived there by means of a ship. D.No one really knows how the first settlers arrived in California.