单项选择题

According to Larson, to redress the traffic problem ______.

A．car pooling must be studied
B．rapid mass transit systems must be introduced
C．flexible work hours must be experimented
D．overall strategies must be coordinated

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单项选择题

The compound word quick-fix ( Line 2, Para.1 ) is closest in meaning to ______.

A．ideal
B．temporary
C．ready
D．efficient

单项选择题

According to the passage, common people ______.

A．use the method of scientific investigation in daily life
B．are not far away from obtaining the scientific skills
C．have to face bravely the obstacles in the academic field
D．are capable of overcoming the difficulty in science work