A technical innovation is necessary if we want to keep the grain production______.

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问题 A technical innovation is necessary if we want to keep the grain production______.

选项 A、staggering
B、shrinking
C、soaring
D、suspending

答案C

解析 选[C]。逻辑关系题:因果。soar“猛增,剧增”,指大幅度的增加,提高。符合逻辑,为答案。[A]staggering“蹒跚,摇晃,踉跄”;[B]shrinking “缩小,使变小”;[D]suspending“暂停,暂缓”。  
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