It is thought that modern corn may be a______of teosint and other wild species that no longer exist.

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问题 It is thought that modern corn may be a______of teosint and other wild species that no longer exist.

选项 A、hybrid
B、combination
C、compound
D、mixture

答案A

解析 句意:人们认为现代玉米可能是墨西哥类蜀黍和其他已不存在的野生品种的杂交。hybrid(指动植物)杂交。符合句意,因此选A项。combination结合。compound(通常指化学上的)混合物。mixture混合物。
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