Columbus had accomplished one of the most amazing and courageous（）in history.

单项选择题Marketing is（）just distributing goods from the manufacturer to the final customer.

A．rather than
B．other than
C．bigger than
D．more than

单项选择题（）of his childhood home in Hannibal, Missouri, provided Mark Twain with the inspiration for two of his most popular novels.

A．Remembering
B．Memories
C．It was the memories
D．He remembered