[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.