They often change the kind of crop in each field few years, for example, growing corn or
They often change the kind of crop in each field few years, for example, growing corn or
发布时间：2020-08-16 13:25:38
They often change the kind of crop in each field few years, for example, growing corn or wheat and then the next year peas or soybeans. A. every B. a C. each D. some
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(答案→)A. every B. a C. each D. some 解析：考查固定结构。表示每隔几年，要用every +数词+ years结构，所以选A。