题目内容
阅读理解
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 hat 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，place，and events were flown in the American Colonies．
The first official flag of the United States was created by Congress on June 14，1777．It consisted of 13 alternate red and white stripes and 13 white stars in a field of blue，representing the 13 colonies that had declared their independence in 1776．Congress adopted a new flag of 15 stars and 15 stripes in 1795，to give representation to the two new states admitted into the Union，Vermont and Kentucky．
By 1817，there were 20 states in the Union，and it became apparent that adding one stripe for each new state would destroy the shape of the flag．As a result，Congress in 1818 restored the original design of 13 stripes and provided that each state was to be represented by one star．In 1912 President William H．Taft made the first official provision for the arrangement of the stars．He ordered that there be six even rows of eight stars each Previously the arrangement of the stars had been left to the flag-maker fancy．
The evolution of the Stars and Stripes reflects the growth of the United States．After the admission of Hawaii into the Union in 1959，the flag was officially changed for the 26th time since its creation．
There are many government flown in the United states in addition to the national flag．Among them are the president's and vice-president's flags and those of the federal departments and some federal agencies．Each state in the Union has an official flag．The United States Navy uses special flags for signaling．
1．According to the passage，which of the following possesses one of the world's oldest national flags？
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2．In the United States，why were the flags of various European nations were flown over the land initially？
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A．Because then the United States was the European nations'colony．
B．Because they were representing famous person，place and events．C．Because the United States wanted to show friendship to the European nations．
D．The passage don't tell us．
3．From the passage，which of the following is not true？
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A．Congress designed the first national flag．
B．Because of the two new states admitted into the Union，the national flag became fifteen stars and fifteen stripes．
C．From the evolution of the stars and stripes，we can understand the history of the United States．
D．The flag was officially changed for the 26th time before the Hawaii admitted into the Union．
4．Which flags now don't exist in the United States？
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A．The president's and vice-president's flags．
B．Each state's official flag in the Union．
C．Children's flags．
D．The United States Navy's flags．
解析：
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