问题
选择题
We can have ___ bluer sky if we create ___ less polluted world.
A．a. a
B．a, the
C．the, a
D．the, the
答案
答案：A
两个都表示是泛指，故选A
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We can have ___ bluer sky if we create ___ less polluted world.
A．a. a
B．a, the
C．the, a
D．the, the
答案：A
两个都表示是泛指，故选A