For all the remaining items the stated dates of delivery are approximate, but ______ would these dates be exceeded by more than ten days.

A．in no case

B．in any case

C．under any circumstances

D．by all means

“The union must and shall be preserved(联邦必须而且将会得到保留)。”这是林肯1860年参加总统竞选时的主题。他认为当时美国政府面临的首要任务是

A．实现国家独立

B．废除奴隶制度

C．维护国家统一

D．实现领土扩张