问题
选择题
Some people fear that ________ air pollution may bring about changes in ________ weather around
the world.[ ]
A. /; the
B. the; /
C. an; the
D. the; a
答案
答案：A
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Some people fear that ________ air pollution may bring about changes in ________ weather around
the world.[ ]
A. /; the
B. the; /
C. an; the
D. the; a
答案：A