单项选择题


A．obtain
B．gain
C．retain
D．maintain
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单项选择题
Where the stars were placed on the national flag in 1818 and 1912
A．Congress.
B．The president.
C．The government.
D．The flagmaker.
单项选择题
Why were only the flags of various European nations flown over the land, during the discovery and settlement period
A．Because the flags were older than the national flag of the U. S.
B．Because the land was divided by these nations.
C．Because there was no universal flag over the land.
D．We don't know from the passage.
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