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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单项选择题
Not any more. in paragraph one indicates that ______.
A．the sun is no longer as hot these days
B．the car's air-conditioner can make the interior cooler
C．the painful experience doesn't exist any longer
D．the driver doesn't need to wait before he gets in the ear now
单项选择题
Which of the following statements is NOT TRUE according to the passage
A．Kids are in greater danger than grownups in Mexico City.
B．The author is not a native Mexican.
C．The Mexican history and culture appeal to the author.
D．The author's husband is a pediatrician.
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