The President during the American Civil War was ______.

单项选择题Which is the main idea of the passage（）

A．Collection and collectors.
B．The evolution of museums.
C．Modem museums and their functions.
D．The birth of museums.

单项选择题Modem museums came into existence in order to （）

A．protect royal and church treasures.
B．improve existing collections.
C．stimulate public interest.
D．raise more funds.