单项选择题

There were so many people talking that I couldn’t __________ on the music.

A．play
B．talk
C．go
D．concentrate
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单项选择题
According to the text, the significance of postcard is that it is one of those that _________.
A．were invented by foreigners
B．postcard has a long history
C．were Britain’s own creation
D．Britain used to be proud of
单项选择题
His poor eyesight __________ him from becoming a pilot.
A．forbid
B．prohibited
C．prevented
D．avoided
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