单项选择题

We learn from the text that traffic planners are more concerned about

A．the attitude of drivers in London.
B．taking a political standpoint.
C．sophisticated toiling systems.
D．imposing congestion charging.
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单项选择题
The implementation of road pricing in London is primarily intended to
A．restrain the capital% traffic growth.
B．produce net annual municipal revenues.
C．remove on-street parking lots.
D．meet ambitious political aims.
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