Grain imports have fallen sharply over the past few year-China became a net grain exporter in 1984-and in 1983 the country started to export soybeans and cotton.
Grain imports have fallen sharply over the past few year-China became a net grain exporter in 1984-and in 1983 the country started to export soybeans and cotton.
A、gone up
B、dropped
C、devised
D、departed
【正确答案】：B
【名师解析】:题目中的关键词 "fallen" 表示数量的减少。选项A "gone up" 意味着数量的增加，与题目中的 "fallen" 相反；选项C "devised" 意为“设计、发明”，与题目内容不符；选项D "departed" 通常指“离开”，也不符合题目的语境。选项B "dropped" 意为“下降”，与题目中的 "fallen" 意思相近，因此是正确答案。
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