问题
选择题
China's grain production has been on _______ rise in the past eight years, with _______ annual increase of 17.5 billion kg. [ ]
A. the; an
B. a; an
C. the; the
D. a; the
答案
答案：A
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China's grain production has been on _______ rise in the past eight years, with _______ annual increase of 17.5 billion kg. [ ]
A. the; an
B. a; an
C. the; the
D. a; the
答案：A