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In the spring of 1961, Yuan planted the seeds of the mutant in a pioneering field, proving that the plant, discovered in 1960, was a "natural hybrid rice".

In the spring of 1961, Yuan planted the seeds of the mutant in a pioneering field, proving that the plant, discovered in 1960, was a "natural hybrid rice".
A.正确
B.错误
正确答案：A

标签：向世界讲述中国

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In the spring of 1961, Yuan planted the seeds of the mutant in a pioneering field, proving that the plant, discovered in 1960, was a &quot;natural hybrid rice&quot;.

In the spring of 1961, Yuan planted the seeds of the mutant in a pioneering field, proving that the plant, discovered in 1960, was a "natural hybrid rice".