单项选择题

Black people were first brought to America from Africa as ______.

A．workers in factories
B．cotton pickers
C．migrants
D．slaves
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单项选择题
The longest reign in British history was ______.
A．Queen Victoria
B．Queen Elizabeth
C．King Henry VIII
D．Queen Charlotte
单项选择题
The first settlement in Australia was made by the ______.
A．English
B．Dutch
C．French
D．German
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