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
The purpose of the last paragraph is to tell the readers ______.
A．the amount of money being spent on injuries every year
B．the importance of General Motors' laboratory research
C．how transport injuries affect people's lives
D．the economic problem scientists and researchers are faced with
单项选择题
The laboratory's impossible goal can be interpreted as that ______.
A．people will not be injured in most car accidents
B．car accidents will no longer exist
C．General Motors will be responsible for most car accidents
D．people will not hurry away from most car accidents
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