单项选择题

Why will battery buses cost less than conventional buses in the long run

A．They will spread the capital cost over a long period.
B．They will be stronger and last longer.
C．They will use less fuel and cost less to maintain.
D．They will be charged at night when electricity costs less.
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单项选择题
The Mark Ⅱ will have a number of advantages over the prototype. Which of these is NOT one of them
A．It will carry more passengers.
B．It will have a wider range.
C．It can be used all through the way.
D．It will cost less to recharge.
单项选择题
Battery buses have some advantages over conventional buses. Which of these advantages is not mentioned in the passage
A．They use less fuel.
B．They make less noise.
C．They produce less pollution.
D．They cost less to produce.
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