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" ._精华吧

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" .

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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" .

A.正确

B.错误

正确答案：正确

Tag：向世界讲述中国时间：2023-12-18 15:29:14

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