问题补充:
Most scientists seem to agree that certain limit should be set on consumption of cars to ease air pollution.
A. a; the
B. /; the
C. the; /
D. the; the
答案:
(答案→)A. a; the
B. /; the
C. the; /
D. the; the
解析:考查冠词。句中a certain limit一定的限制;the consumption of cars特指小汽车的消费。故选A。