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题目内容双击单词支持查询和收藏哦～
Despite the abundance and importance of maize, its biological origin has been a long-running mystery. The bright yellow, mouth-watering treat does not grow in the wild anywhere on the planet, so its (i)_____ is not at all (ii)_____.
- Blank(i)
- utility
- popularity
- ancestry
- Blank(ii)
- helpful
- important
- obvious
ancestry , obvious 显示答案
以上解析由 考满分老师提供。
