Dr Yuan Longping grows ________ is calle...

Dr Yuan Longping grows ________ is called super hybrid rice, _________ has a high output.

A．what; which

B．that; what

C．that; which

D．what; what

A 【解析】本题考查定语从句和宾语从句。第一个空是宾语从句，引导词作主语用what；第二空是非限制性定语从句，引导词代表super hybrid rice，在从句中作主语，用which。

考点分析：

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