单项选择题

Racial discrimination has still in some parts of the U.S. since it after the Civil War.

A．been existed; has been done away
B．existed; has been done away with
C．been existed; has been done away with
D．existed; was done away with

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单项选择题

单项选择题

Racial discrimination has still ______ in some parts of the U.S. since it ______ after the Civil War.