单选题 {{B}}B{{/B}}

The basic flag of the United States is one of the world's oldest national flags. Only the basic flags of Austria, Denmark, Great Britain, the Netherlands, Sweden, and Switzerland are older.
During the discovery and settlement of what is now the United States, the flags of various European nations were flown over the land, as symbols of possession. Later, in the Colonial and Revolutionary War periods, flags representing famous persons, places, and events were flown in the American Colonies(殖民地).
The first official flag of the United States was created by Congress(国会) on June 14,1777. It consisted of 13 alternate (交替的) red and white stripes (条) and 13 white stars in a field of blue, representing the 13 colonies that had declared their independence in 1776.

单选题 The basic flag of the United States is ______.

A、 the oldest national flag in the world
B、 one of the world's oldest flags
C、 the most beautiful flag in the West
D、 as old as the basic flags of some European nations

单选题 Before the War of Independence the flags of various European nations flew over the land were symbols of ______.

【正确答案】 B

【答案解析】[解析] 文章第二段第一句说，在发现美国和向美国移民期间，飘在这片土地上的欧洲各国家的旗帜是拥有这片土地的象征。

单选题 The first official flag of the United States was adopted

A、 before the Independence War
B、 right after the Independence War
C、 when independence was declared in 1776
D、 during the War of Independence which ended in 1783

【正确答案】 B

【答案解析】[解析] 第三段第一句，第一面正式美国国旗在1777年6月14日制定。此段最后一句，美国于1776年宣布独立。

单选题 The 13 red and white stripes and 13 white stars represent

【正确答案】 B

【答案解析】[解析] 最后一段说，美国国旗上有13条红、白条和13个白色的星星，代表1776年宣布独立的13个殖民地。