单项选择题

In paragraph 2, "gimmicks" means ______.

A．types of machine
B．pieces of equipment
C．electronic devices
D．technical innovations
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单项选择题
The word hawk (Paragraph 3) most probably means ______.
A．transport
B．sell
C．race
D．deliver
单项选择题
The major concerns of General Motors' research laboratory are ______.
A．traffic regulations
B．driving techniques
C．the car's interior structures
D．innovations in cars
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