单项选择题

Questionsll-14 are based on the following passage. What is the topic of the talk

A．Energy conservation.
B．Transportation of the future.
C．Strip cities:
D．Advantages of air transportation over railroads.
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单项选择题
What product are they talking about
A．Kitchen.
B．Deep-freezer.
C．Mobility units.
D．Cake mixer.
单项选择题
What is the basis for the law that doesn’t allow bicyclists in the middle of the street
A．The law of he road.
B．International law.
C．Local law.
D．Federal law.
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