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How Native Americans developed corn is a puzzling, for no wild com has ever been discovered.
How Native Americans developed corn is a puzzling, for no wild com has ever been discovered.
admin
2013-11-29
61
问题
How Native Americans developed corn is a puzzling, for no wild com has ever been discovered.
选项
答案
puzzling—puzzle
解析
译文:土著美国人如何种植玉米是个谜,因为至今还没有发现野生的玉米。
分析:考查词性。冠词a后应该加可数名词单数,puzzling是形容词,应改为名词puzzle。
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专业英语八级
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